Add stg_sel_n_noupd_info symbols to Linker.c
[ghc.git] / rts / Linker.c
1 /* -----------------------------------------------------------------------------
2 *
3 * (c) The GHC Team, 2000-2012
4 *
5 * RTS Object Linker
6 *
7 * ---------------------------------------------------------------------------*/
8
9 #if 0
10 #include "PosixSource.h"
11 #endif
12
13 /* Linux needs _GNU_SOURCE to get RTLD_DEFAULT from <dlfcn.h> and
14 MREMAP_MAYMOVE from <sys/mman.h>.
15 */
16 #if defined(__linux__) || defined(__GLIBC__)
17 #define _GNU_SOURCE 1
18 #endif
19
20 #include "Rts.h"
21 #include "HsFFI.h"
22
23 #include "sm/Storage.h"
24 #include "Stats.h"
25 #include "Hash.h"
26 #include "LinkerInternals.h"
27 #include "RtsUtils.h"
28 #include "Trace.h"
29 #include "StgPrimFloat.h" // for __int_encodeFloat etc.
30 #include "Stable.h"
31 #include "Proftimer.h"
32
33 #if !defined(mingw32_HOST_OS)
34 #include "posix/Signals.h"
35 #endif
36
37 // get protos for is*()
38 #include <ctype.h>
39
40 #ifdef HAVE_SYS_TYPES_H
41 #include <sys/types.h>
42 #endif
43
44 #include <inttypes.h>
45 #include <stdlib.h>
46 #include <string.h>
47 #include <stdio.h>
48 #include <assert.h>
49
50 #ifdef HAVE_SYS_STAT_H
51 #include <sys/stat.h>
52 #endif
53
54 #if defined(HAVE_DLFCN_H)
55 #include <dlfcn.h>
56 #endif
57
58 #if defined(cygwin32_HOST_OS)
59 #ifdef HAVE_DIRENT_H
60 #include <dirent.h>
61 #endif
62
63 #ifdef HAVE_SYS_TIME_H
64 #include <sys/time.h>
65 #endif
66 #include <regex.h>
67 #include <sys/fcntl.h>
68 #include <sys/termios.h>
69 #include <sys/utime.h>
70 #include <sys/utsname.h>
71 #include <sys/wait.h>
72 #endif
73
74 #if (defined(powerpc_HOST_ARCH) && defined(linux_HOST_OS)) \
75 || (!defined(powerpc_HOST_ARCH) && \
76 ( defined(linux_HOST_OS) || defined(freebsd_HOST_OS) || \
77 defined(dragonfly_HOST_OS) || defined(netbsd_HOST_OS ) || \
78 defined(openbsd_HOST_OS ) || defined(darwin_HOST_OS ) || \
79 defined(kfreebsdgnu_HOST_OS) || defined(gnu_HOST_OS)))
80 /* Don't use mmap on powerpc_HOST_ARCH as mmap doesn't support
81 * reallocating but we need to allocate jump islands just after each
82 * object images. Otherwise relative branches to jump islands can fail
83 * due to 24-bits displacement overflow.
84 */
85 #define USE_MMAP
86 #include <fcntl.h>
87 #include <sys/mman.h>
88
89 #ifdef HAVE_UNISTD_H
90 #include <unistd.h>
91 #endif
92
93 #endif
94
95
96 /* PowerPC has relative branch instructions with only 24 bit displacements
97 * and therefore needs jump islands contiguous with each object code module.
98 */
99 #if (defined(USE_MMAP) && defined(powerpc_HOST_ARCH) && defined(linux_HOST_OS))
100 #define USE_CONTIGUOUS_MMAP 1
101 #else
102 #define USE_CONTIGUOUS_MMAP 0
103 #endif
104
105 #if defined(linux_HOST_OS) || defined(solaris2_HOST_OS) || defined(freebsd_HOST_OS) || defined(kfreebsdgnu_HOST_OS) || defined(dragonfly_HOST_OS) || defined(netbsd_HOST_OS) || defined(openbsd_HOST_OS) || defined(gnu_HOST_OS)
106 # define OBJFORMAT_ELF
107 # include <regex.h> // regex is already used by dlopen() so this is OK
108 // to use here without requiring an additional lib
109 #elif defined(cygwin32_HOST_OS) || defined (mingw32_HOST_OS)
110 # define OBJFORMAT_PEi386
111 # include <windows.h>
112 # include <math.h>
113 #elif defined(darwin_HOST_OS)
114 # define OBJFORMAT_MACHO
115 # include <regex.h>
116 # include <mach/machine.h>
117 # include <mach-o/fat.h>
118 # include <mach-o/loader.h>
119 # include <mach-o/nlist.h>
120 # include <mach-o/reloc.h>
121 #if !defined(HAVE_DLFCN_H)
122 # include <mach-o/dyld.h>
123 #endif
124 #if defined(powerpc_HOST_ARCH)
125 # include <mach-o/ppc/reloc.h>
126 #endif
127 #if defined(x86_64_HOST_ARCH)
128 # include <mach-o/x86_64/reloc.h>
129 #endif
130 #endif
131
132 #if defined(x86_64_HOST_ARCH) && defined(darwin_HOST_OS)
133 #define ALWAYS_PIC
134 #endif
135
136 #if defined(dragonfly_HOST_OS)
137 #include <sys/tls.h>
138 #endif
139
140 // Defining this as 'int' rather than 'const int' means that we don't get
141 // warnings like
142 // error: function might be possible candidate for attribute ‘noreturn’
143 // from gcc:
144 #ifdef DYNAMIC_GHC_PROGRAMS
145 int dynamicGhcPrograms = 1;
146 #else
147 int dynamicGhcPrograms = 0;
148 #endif
149
150 /* Hash table mapping symbol names to Symbol */
151 static /*Str*/HashTable *symhash;
152
153 /* Hash table mapping symbol names to StgStablePtr */
154 static /*Str*/HashTable *stablehash;
155
156 /* List of currently loaded objects */
157 ObjectCode *objects = NULL; /* initially empty */
158
159 static HsInt loadOc( ObjectCode* oc );
160 static ObjectCode* mkOc( pathchar *path, char *image, int imageSize,
161 char *archiveMemberName
162 #ifndef USE_MMAP
163 #ifdef darwin_HOST_OS
164 , int misalignment
165 #endif
166 #endif
167 );
168
169 // Use wchar_t for pathnames on Windows (#5697)
170 #if defined(mingw32_HOST_OS)
171 #define pathcmp wcscmp
172 #define pathlen wcslen
173 #define pathopen _wfopen
174 #define pathstat _wstat
175 #define struct_stat struct _stat
176 #define open wopen
177 #define WSTR(s) L##s
178 #define PATH_FMT "S"
179 #else
180 #define pathcmp strcmp
181 #define pathlen strlen
182 #define pathopen fopen
183 #define pathstat stat
184 #define struct_stat struct stat
185 #define WSTR(s) s
186 #define PATH_FMT "s"
187 #endif
188
189 static pathchar* pathdup(pathchar *path)
190 {
191 pathchar *ret;
192 #if defined(mingw32_HOST_OS)
193 ret = wcsdup(path);
194 #else
195 /* sigh, strdup() isn't a POSIX function, so do it the long way */
196 ret = stgMallocBytes( strlen(path)+1, "loadObj" );
197 strcpy(ret, path);
198 #endif
199 return ret;
200 }
201
202
203 #if defined(OBJFORMAT_ELF)
204 static int ocVerifyImage_ELF ( ObjectCode* oc );
205 static int ocGetNames_ELF ( ObjectCode* oc );
206 static int ocResolve_ELF ( ObjectCode* oc );
207 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
208 static int ocAllocateSymbolExtras_ELF ( ObjectCode* oc );
209 #endif
210 #elif defined(OBJFORMAT_PEi386)
211 static int ocVerifyImage_PEi386 ( ObjectCode* oc );
212 static int ocGetNames_PEi386 ( ObjectCode* oc );
213 static int ocResolve_PEi386 ( ObjectCode* oc );
214 static void *lookupSymbolInDLLs ( unsigned char *lbl );
215 static void zapTrailingAtSign ( unsigned char *sym );
216 #elif defined(OBJFORMAT_MACHO)
217 static int ocVerifyImage_MachO ( ObjectCode* oc );
218 static int ocGetNames_MachO ( ObjectCode* oc );
219 static int ocResolve_MachO ( ObjectCode* oc );
220
221 #ifndef USE_MMAP
222 static int machoGetMisalignment( FILE * );
223 #endif
224 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
225 static int ocAllocateSymbolExtras_MachO ( ObjectCode* oc );
226 #endif
227 #ifdef powerpc_HOST_ARCH
228 static void machoInitSymbolsWithoutUnderscore( void );
229 #endif
230 #endif
231
232 /* on x86_64 we have a problem with relocating symbol references in
233 * code that was compiled without -fPIC. By default, the small memory
234 * model is used, which assumes that symbol references can fit in a
235 * 32-bit slot. The system dynamic linker makes this work for
236 * references to shared libraries by either (a) allocating a jump
237 * table slot for code references, or (b) moving the symbol at load
238 * time (and copying its contents, if necessary) for data references.
239 *
240 * We unfortunately can't tell whether symbol references are to code
241 * or data. So for now we assume they are code (the vast majority
242 * are), and allocate jump-table slots. Unfortunately this will
243 * SILENTLY generate crashing code for data references. This hack is
244 * enabled by X86_64_ELF_NONPIC_HACK.
245 *
246 * One workaround is to use shared Haskell libraries. This is
247 * coming. Another workaround is to keep the static libraries but
248 * compile them with -fPIC, because that will generate PIC references
249 * to data which can be relocated. The PIC code is still too green to
250 * do this systematically, though.
251 *
252 * See bug #781
253 * See thread http://www.haskell.org/pipermail/cvs-ghc/2007-September/038458.html
254 *
255 * Naming Scheme for Symbol Macros
256 *
257 * SymI_*: symbol is internal to the RTS. It resides in an object
258 * file/library that is statically.
259 * SymE_*: symbol is external to the RTS library. It might be linked
260 * dynamically.
261 *
262 * Sym*_HasProto : the symbol prototype is imported in an include file
263 * or defined explicitly
264 * Sym*_NeedsProto: the symbol is undefined and we add a dummy
265 * default proto extern void sym(void);
266 */
267 #define X86_64_ELF_NONPIC_HACK 1
268
269 /* Link objects into the lower 2Gb on x86_64. GHC assumes the
270 * small memory model on this architecture (see gcc docs,
271 * -mcmodel=small).
272 *
273 * MAP_32BIT not available on OpenBSD/amd64
274 */
275 #if defined(x86_64_HOST_ARCH) && defined(MAP_32BIT)
276 #define TRY_MAP_32BIT MAP_32BIT
277 #else
278 #define TRY_MAP_32BIT 0
279 #endif
280
281 /*
282 * Due to the small memory model (see above), on x86_64 we have to map
283 * all our non-PIC object files into the low 2Gb of the address space
284 * (why 2Gb and not 4Gb? Because all addresses must be reachable
285 * using a 32-bit signed PC-relative offset). On Linux we can do this
286 * using the MAP_32BIT flag to mmap(), however on other OSs
287 * (e.g. *BSD, see #2063, and also on Linux inside Xen, see #2512), we
288 * can't do this. So on these systems, we have to pick a base address
289 * in the low 2Gb of the address space and try to allocate memory from
290 * there.
291 *
292 * We pick a default address based on the OS, but also make this
293 * configurable via an RTS flag (+RTS -xm)
294 */
295 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
296
297 #if defined(MAP_32BIT)
298 // Try to use MAP_32BIT
299 #define MMAP_32BIT_BASE_DEFAULT 0
300 #else
301 // A guess: 1Gb.
302 #define MMAP_32BIT_BASE_DEFAULT 0x40000000
303 #endif
304
305 static void *mmap_32bit_base = (void *)MMAP_32BIT_BASE_DEFAULT;
306 #endif
307
308 /* MAP_ANONYMOUS is MAP_ANON on some systems, e.g. OpenBSD */
309 #if !defined(MAP_ANONYMOUS) && defined(MAP_ANON)
310 #define MAP_ANONYMOUS MAP_ANON
311 #endif
312
313 /* -----------------------------------------------------------------------------
314 * Built-in symbols from the RTS
315 */
316
317 typedef struct _RtsSymbolVal {
318 char *lbl;
319 void *addr;
320 } RtsSymbolVal;
321
322 #define Maybe_Stable_Names SymI_HasProto(stg_mkWeakzh) \
323 SymI_HasProto(stg_mkWeakNoFinalizzerzh) \
324 SymI_HasProto(stg_mkWeakForeignEnvzh) \
325 SymI_HasProto(stg_makeStableNamezh) \
326 SymI_HasProto(stg_finalizzeWeakzh)
327
328 #if !defined (mingw32_HOST_OS)
329 #define RTS_POSIX_ONLY_SYMBOLS \
330 SymI_HasProto(__hscore_get_saved_termios) \
331 SymI_HasProto(__hscore_set_saved_termios) \
332 SymI_HasProto(shutdownHaskellAndSignal) \
333 SymI_HasProto(signal_handlers) \
334 SymI_HasProto(stg_sig_install) \
335 SymI_HasProto(rtsTimerSignal) \
336 SymI_HasProto(atexit) \
337 SymI_NeedsProto(nocldstop)
338 #endif
339
340 #if defined (cygwin32_HOST_OS)
341 #define RTS_MINGW_ONLY_SYMBOLS /**/
342 /* Don't have the ability to read import libs / archives, so
343 * we have to stupidly list a lot of what libcygwin.a
344 * exports; sigh.
345 */
346 #define RTS_CYGWIN_ONLY_SYMBOLS \
347 SymI_HasProto(regfree) \
348 SymI_HasProto(regexec) \
349 SymI_HasProto(regerror) \
350 SymI_HasProto(regcomp) \
351 SymI_HasProto(__errno) \
352 SymI_HasProto(access) \
353 SymI_HasProto(chmod) \
354 SymI_HasProto(chdir) \
355 SymI_HasProto(close) \
356 SymI_HasProto(creat) \
357 SymI_HasProto(dup) \
358 SymI_HasProto(dup2) \
359 SymI_HasProto(fstat) \
360 SymI_HasProto(fcntl) \
361 SymI_HasProto(getcwd) \
362 SymI_HasProto(getenv) \
363 SymI_HasProto(lseek) \
364 SymI_HasProto(open) \
365 SymI_HasProto(fpathconf) \
366 SymI_HasProto(pathconf) \
367 SymI_HasProto(stat) \
368 SymI_HasProto(pow) \
369 SymI_HasProto(tanh) \
370 SymI_HasProto(cosh) \
371 SymI_HasProto(sinh) \
372 SymI_HasProto(atan) \
373 SymI_HasProto(acos) \
374 SymI_HasProto(asin) \
375 SymI_HasProto(tan) \
376 SymI_HasProto(cos) \
377 SymI_HasProto(sin) \
378 SymI_HasProto(exp) \
379 SymI_HasProto(log) \
380 SymI_HasProto(sqrt) \
381 SymI_HasProto(localtime_r) \
382 SymI_HasProto(gmtime_r) \
383 SymI_HasProto(mktime) \
384 SymI_NeedsProto(_imp___tzname) \
385 SymI_HasProto(gettimeofday) \
386 SymI_HasProto(timezone) \
387 SymI_HasProto(tcgetattr) \
388 SymI_HasProto(tcsetattr) \
389 SymI_HasProto(memcpy) \
390 SymI_HasProto(memmove) \
391 SymI_HasProto(realloc) \
392 SymI_HasProto(malloc) \
393 SymI_HasProto(free) \
394 SymI_HasProto(fork) \
395 SymI_HasProto(lstat) \
396 SymI_HasProto(isatty) \
397 SymI_HasProto(mkdir) \
398 SymI_HasProto(opendir) \
399 SymI_HasProto(readdir) \
400 SymI_HasProto(rewinddir) \
401 SymI_HasProto(closedir) \
402 SymI_HasProto(link) \
403 SymI_HasProto(mkfifo) \
404 SymI_HasProto(pipe) \
405 SymI_HasProto(read) \
406 SymI_HasProto(rename) \
407 SymI_HasProto(rmdir) \
408 SymI_HasProto(select) \
409 SymI_HasProto(system) \
410 SymI_HasProto(write) \
411 SymI_HasProto(strcmp) \
412 SymI_HasProto(strcpy) \
413 SymI_HasProto(strncpy) \
414 SymI_HasProto(strerror) \
415 SymI_HasProto(sigaddset) \
416 SymI_HasProto(sigemptyset) \
417 SymI_HasProto(sigprocmask) \
418 SymI_HasProto(umask) \
419 SymI_HasProto(uname) \
420 SymI_HasProto(unlink) \
421 SymI_HasProto(utime) \
422 SymI_HasProto(waitpid)
423
424 #elif defined(mingw32_HOST_OS)
425 #define RTS_POSIX_ONLY_SYMBOLS /**/
426 #define RTS_CYGWIN_ONLY_SYMBOLS /**/
427
428 #if HAVE_GETTIMEOFDAY
429 #define RTS_MINGW_GETTIMEOFDAY_SYM SymI_NeedsProto(gettimeofday)
430 #else
431 #define RTS_MINGW_GETTIMEOFDAY_SYM /**/
432 #endif
433
434 #if HAVE___MINGW_VFPRINTF
435 #define RTS___MINGW_VFPRINTF_SYM SymI_HasProto(__mingw_vfprintf)
436 #else
437 #define RTS___MINGW_VFPRINTF_SYM /**/
438 #endif
439
440 #if defined(i386_HOST_ARCH)
441 #define RTS_WIN32_ONLY(X) X
442 #else
443 #define RTS_WIN32_ONLY(X) /**/
444 #endif
445
446 #if defined(x86_64_HOST_ARCH)
447 #define RTS_WIN64_ONLY(X) X
448 #else
449 #define RTS_WIN64_ONLY(X) /**/
450 #endif
451
452 /* These are statically linked from the mingw libraries into the ghc
453 executable, so we have to employ this hack. */
454 #define RTS_MINGW_ONLY_SYMBOLS \
455 SymI_HasProto(stg_asyncReadzh) \
456 SymI_HasProto(stg_asyncWritezh) \
457 SymI_HasProto(stg_asyncDoProczh) \
458 SymI_HasProto(getWin32ProgArgv) \
459 SymI_HasProto(setWin32ProgArgv) \
460 SymI_HasProto(memset) \
461 SymI_HasProto(inet_ntoa) \
462 SymI_HasProto(inet_addr) \
463 SymI_HasProto(htonl) \
464 SymI_HasProto(recvfrom) \
465 SymI_HasProto(listen) \
466 SymI_HasProto(bind) \
467 SymI_HasProto(shutdown) \
468 SymI_HasProto(connect) \
469 SymI_HasProto(htons) \
470 SymI_HasProto(ntohs) \
471 SymI_HasProto(getservbyname) \
472 SymI_HasProto(getservbyport) \
473 SymI_HasProto(getprotobynumber) \
474 SymI_HasProto(getprotobyname) \
475 SymI_HasProto(gethostbyname) \
476 SymI_HasProto(gethostbyaddr) \
477 SymI_HasProto(gethostname) \
478 SymI_HasProto(strcpy) \
479 SymI_HasProto(strncpy) \
480 SymI_HasProto(abort) \
481 RTS_WIN32_ONLY(SymI_NeedsProto(_alloca)) \
482 SymI_HasProto(isxdigit) \
483 SymI_HasProto(isupper) \
484 SymI_HasProto(ispunct) \
485 SymI_HasProto(islower) \
486 SymI_HasProto(isspace) \
487 SymI_HasProto(isprint) \
488 SymI_HasProto(isdigit) \
489 SymI_HasProto(iscntrl) \
490 SymI_HasProto(isalpha) \
491 SymI_HasProto(isalnum) \
492 SymI_HasProto(isascii) \
493 RTS___MINGW_VFPRINTF_SYM \
494 SymI_HasProto(strcmp) \
495 SymI_HasProto(memmove) \
496 SymI_HasProto(realloc) \
497 SymI_HasProto(malloc) \
498 SymI_HasProto(pow) \
499 SymI_HasProto(tanh) \
500 SymI_HasProto(cosh) \
501 SymI_HasProto(sinh) \
502 SymI_HasProto(atan) \
503 SymI_HasProto(acos) \
504 SymI_HasProto(asin) \
505 SymI_HasProto(tan) \
506 SymI_HasProto(cos) \
507 SymI_HasProto(sin) \
508 SymI_HasProto(exp) \
509 SymI_HasProto(log) \
510 SymI_HasProto(sqrt) \
511 SymI_HasProto(powf) \
512 SymI_HasProto(tanhf) \
513 SymI_HasProto(coshf) \
514 SymI_HasProto(sinhf) \
515 SymI_HasProto(atanf) \
516 SymI_HasProto(acosf) \
517 SymI_HasProto(asinf) \
518 SymI_HasProto(tanf) \
519 SymI_HasProto(cosf) \
520 SymI_HasProto(sinf) \
521 SymI_HasProto(expf) \
522 SymI_HasProto(logf) \
523 SymI_HasProto(sqrtf) \
524 SymI_HasProto(erf) \
525 SymI_HasProto(erfc) \
526 SymI_HasProto(erff) \
527 SymI_HasProto(erfcf) \
528 SymI_HasProto(memcpy) \
529 SymI_HasProto(rts_InstallConsoleEvent) \
530 SymI_HasProto(rts_ConsoleHandlerDone) \
531 SymI_NeedsProto(mktime) \
532 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___timezone)) \
533 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___tzname)) \
534 RTS_WIN32_ONLY(SymI_NeedsProto(_imp__tzname)) \
535 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___iob)) \
536 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___osver)) \
537 SymI_NeedsProto(localtime) \
538 SymI_NeedsProto(gmtime) \
539 SymI_NeedsProto(opendir) \
540 SymI_NeedsProto(readdir) \
541 SymI_NeedsProto(rewinddir) \
542 RTS_WIN32_ONLY(SymI_NeedsProto(_imp____mb_cur_max)) \
543 RTS_WIN32_ONLY(SymI_NeedsProto(_imp___pctype)) \
544 RTS_WIN32_ONLY(SymI_NeedsProto(__chkstk)) \
545 RTS_WIN64_ONLY(SymI_NeedsProto(__imp___iob_func)) \
546 RTS_WIN64_ONLY(SymI_NeedsProto(___chkstk_ms)) \
547 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_localeconv)) \
548 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_islower)) \
549 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_isspace)) \
550 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_isxdigit)) \
551 RTS_WIN64_ONLY(SymI_HasProto(close)) \
552 RTS_WIN64_ONLY(SymI_HasProto(read)) \
553 RTS_WIN64_ONLY(SymI_HasProto(dup)) \
554 RTS_WIN64_ONLY(SymI_HasProto(dup2)) \
555 RTS_WIN64_ONLY(SymI_HasProto(write)) \
556 SymI_NeedsProto(getpid) \
557 RTS_WIN64_ONLY(SymI_HasProto(access)) \
558 SymI_HasProto(chmod) \
559 RTS_WIN64_ONLY(SymI_HasProto(creat)) \
560 RTS_WIN64_ONLY(SymI_HasProto(umask)) \
561 SymI_HasProto(unlink) \
562 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__errno)) \
563 RTS_WIN64_ONLY(SymI_NeedsProto(ftruncate64)) \
564 RTS_WIN64_ONLY(SymI_HasProto(setmode)) \
565 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__wstat64)) \
566 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__fstat64)) \
567 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__wsopen)) \
568 RTS_WIN64_ONLY(SymI_HasProto(__imp__environ)) \
569 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileAttributesA)) \
570 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileInformationByHandle)) \
571 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetFileType)) \
572 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetLastError)) \
573 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_QueryPerformanceFrequency)) \
574 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_QueryPerformanceCounter)) \
575 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetTickCount)) \
576 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_WaitForSingleObject)) \
577 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_PeekConsoleInputA)) \
578 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ReadConsoleInputA)) \
579 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_PeekNamedPipe)) \
580 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__isatty)) \
581 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_select)) \
582 RTS_WIN64_ONLY(SymI_HasProto(isatty)) \
583 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__get_osfhandle)) \
584 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetConsoleMode)) \
585 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetConsoleMode)) \
586 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FlushConsoleInputBuffer)) \
587 RTS_WIN64_ONLY(SymI_HasProto(free)) \
588 RTS_WIN64_ONLY(SymI_NeedsProto(raise)) \
589 RTS_WIN64_ONLY(SymI_NeedsProto(_getpid)) \
590 RTS_WIN64_ONLY(SymI_HasProto(getc)) \
591 RTS_WIN64_ONLY(SymI_HasProto(ungetc)) \
592 RTS_WIN64_ONLY(SymI_HasProto(puts)) \
593 RTS_WIN64_ONLY(SymI_HasProto(putc)) \
594 RTS_WIN64_ONLY(SymI_HasProto(putchar)) \
595 RTS_WIN64_ONLY(SymI_HasProto(fputc)) \
596 RTS_WIN64_ONLY(SymI_HasProto(fread)) \
597 RTS_WIN64_ONLY(SymI_HasProto(fwrite)) \
598 RTS_WIN64_ONLY(SymI_HasProto(ferror)) \
599 RTS_WIN64_ONLY(SymI_HasProto(printf)) \
600 RTS_WIN64_ONLY(SymI_HasProto(fprintf)) \
601 RTS_WIN64_ONLY(SymI_HasProto(sprintf)) \
602 RTS_WIN64_ONLY(SymI_HasProto(vsprintf)) \
603 RTS_WIN64_ONLY(SymI_HasProto(sscanf)) \
604 RTS_WIN64_ONLY(SymI_HasProto(ldexp)) \
605 RTS_WIN64_ONLY(SymI_HasProto(strlen)) \
606 RTS_WIN64_ONLY(SymI_HasProto(strnlen)) \
607 RTS_WIN64_ONLY(SymI_HasProto(strchr)) \
608 RTS_WIN64_ONLY(SymI_HasProto(strtol)) \
609 RTS_WIN64_ONLY(SymI_HasProto(strerror)) \
610 RTS_WIN64_ONLY(SymI_HasProto(memchr)) \
611 RTS_WIN64_ONLY(SymI_HasProto(memcmp)) \
612 RTS_WIN64_ONLY(SymI_HasProto(wcscpy)) \
613 RTS_WIN64_ONLY(SymI_HasProto(wcslen)) \
614 RTS_WIN64_ONLY(SymI_HasProto(_lseeki64)) \
615 RTS_WIN64_ONLY(SymI_HasProto(_wchmod)) \
616 RTS_WIN64_ONLY(SymI_HasProto(closesocket)) \
617 RTS_WIN64_ONLY(SymI_HasProto(send)) \
618 RTS_WIN64_ONLY(SymI_HasProto(recv)) \
619 RTS_WIN64_ONLY(SymI_HasProto(bsearch)) \
620 RTS_WIN64_ONLY(SymI_HasProto(CommandLineToArgvW)) \
621 RTS_WIN64_ONLY(SymI_HasProto(CreateBitmap)) \
622 RTS_WIN64_ONLY(SymI_HasProto(CreateBitmapIndirect)) \
623 RTS_WIN64_ONLY(SymI_HasProto(CreateCompatibleBitmap)) \
624 RTS_WIN64_ONLY(SymI_HasProto(CreateDIBPatternBrushPt)) \
625 RTS_WIN64_ONLY(SymI_HasProto(CreateDIBitmap)) \
626 RTS_WIN64_ONLY(SymI_HasProto(SetBitmapDimensionEx)) \
627 RTS_WIN64_ONLY(SymI_HasProto(GetBitmapDimensionEx)) \
628 RTS_WIN64_ONLY(SymI_HasProto(GetStockObject)) \
629 RTS_WIN64_ONLY(SymI_HasProto(GetObjectW)) \
630 RTS_WIN64_ONLY(SymI_HasProto(DeleteObject)) \
631 RTS_WIN64_ONLY(SymI_HasProto(SetDIBits)) \
632 RTS_WIN64_ONLY(SymI_HasProto(GetDIBits)) \
633 RTS_WIN64_ONLY(SymI_HasProto(CreateSolidBrush)) \
634 RTS_WIN64_ONLY(SymI_HasProto(CreateHatchBrush)) \
635 RTS_WIN64_ONLY(SymI_HasProto(CreatePatternBrush)) \
636 RTS_WIN64_ONLY(SymI_HasProto(CreateFontW)) \
637 RTS_WIN64_ONLY(SymI_HasProto(AngleArc)) \
638 RTS_WIN64_ONLY(SymI_HasProto(Arc)) \
639 RTS_WIN64_ONLY(SymI_HasProto(ArcTo)) \
640 RTS_WIN64_ONLY(SymI_HasProto(BeginPath)) \
641 RTS_WIN64_ONLY(SymI_HasProto(BitBlt)) \
642 RTS_WIN64_ONLY(SymI_HasProto(CancelDC)) \
643 RTS_WIN64_ONLY(SymI_HasProto(Chord)) \
644 RTS_WIN64_ONLY(SymI_HasProto(CloseFigure)) \
645 RTS_WIN64_ONLY(SymI_HasProto(CombineRgn)) \
646 RTS_WIN64_ONLY(SymI_HasProto(CreateCompatibleDC)) \
647 RTS_WIN64_ONLY(SymI_HasProto(CreateEllipticRgn)) \
648 RTS_WIN64_ONLY(SymI_HasProto(CreateEllipticRgnIndirect)) \
649 RTS_WIN64_ONLY(SymI_HasProto(CreatePen)) \
650 RTS_WIN64_ONLY(SymI_HasProto(CreatePolygonRgn)) \
651 RTS_WIN64_ONLY(SymI_HasProto(CreateRectRgn)) \
652 RTS_WIN64_ONLY(SymI_HasProto(CreateRectRgnIndirect)) \
653 RTS_WIN64_ONLY(SymI_HasProto(CreateRoundRectRgn)) \
654 RTS_WIN64_ONLY(SymI_HasProto(DeleteDC)) \
655 RTS_WIN64_ONLY(SymI_HasProto(Ellipse)) \
656 RTS_WIN64_ONLY(SymI_HasProto(EndPath)) \
657 RTS_WIN64_ONLY(SymI_HasProto(EqualRgn)) \
658 RTS_WIN64_ONLY(SymI_HasProto(ExtSelectClipRgn)) \
659 RTS_WIN64_ONLY(SymI_HasProto(FillPath)) \
660 RTS_WIN64_ONLY(SymI_HasProto(FillRgn)) \
661 RTS_WIN64_ONLY(SymI_HasProto(FlattenPath)) \
662 RTS_WIN64_ONLY(SymI_HasProto(FrameRgn)) \
663 RTS_WIN64_ONLY(SymI_HasProto(GetArcDirection)) \
664 RTS_WIN64_ONLY(SymI_HasProto(GetBkColor)) \
665 RTS_WIN64_ONLY(SymI_HasProto(GetBkMode)) \
666 RTS_WIN64_ONLY(SymI_HasProto(GetBrushOrgEx)) \
667 RTS_WIN64_ONLY(SymI_HasProto(GetCurrentObject)) \
668 RTS_WIN64_ONLY(SymI_HasProto(GetDCOrgEx)) \
669 RTS_WIN64_ONLY(SymI_HasProto(GetGraphicsMode)) \
670 RTS_WIN64_ONLY(SymI_HasProto(GetMiterLimit)) \
671 RTS_WIN64_ONLY(SymI_HasProto(GetPolyFillMode)) \
672 RTS_WIN64_ONLY(SymI_HasProto(GetRgnBox)) \
673 RTS_WIN64_ONLY(SymI_HasProto(GetStretchBltMode)) \
674 RTS_WIN64_ONLY(SymI_HasProto(GetTextAlign)) \
675 RTS_WIN64_ONLY(SymI_HasProto(GetTextCharacterExtra)) \
676 RTS_WIN64_ONLY(SymI_HasProto(GetTextColor)) \
677 RTS_WIN64_ONLY(SymI_HasProto(GetTextExtentPoint32W)) \
678 RTS_WIN64_ONLY(SymI_HasProto(InvertRgn)) \
679 RTS_WIN64_ONLY(SymI_HasProto(LineTo)) \
680 RTS_WIN64_ONLY(SymI_HasProto(MaskBlt)) \
681 RTS_WIN64_ONLY(SymI_HasProto(MoveToEx)) \
682 RTS_WIN64_ONLY(SymI_HasProto(OffsetRgn)) \
683 RTS_WIN64_ONLY(SymI_HasProto(PaintRgn)) \
684 RTS_WIN64_ONLY(SymI_HasProto(PathToRegion)) \
685 RTS_WIN64_ONLY(SymI_HasProto(Pie)) \
686 RTS_WIN64_ONLY(SymI_HasProto(PlgBlt)) \
687 RTS_WIN64_ONLY(SymI_HasProto(PolyBezier)) \
688 RTS_WIN64_ONLY(SymI_HasProto(PolyBezierTo)) \
689 RTS_WIN64_ONLY(SymI_HasProto(Polygon)) \
690 RTS_WIN64_ONLY(SymI_HasProto(Polyline)) \
691 RTS_WIN64_ONLY(SymI_HasProto(PolylineTo)) \
692 RTS_WIN64_ONLY(SymI_HasProto(PtInRegion)) \
693 RTS_WIN64_ONLY(SymI_HasProto(Rectangle)) \
694 RTS_WIN64_ONLY(SymI_HasProto(RectInRegion)) \
695 RTS_WIN64_ONLY(SymI_HasProto(RestoreDC)) \
696 RTS_WIN64_ONLY(SymI_HasProto(RoundRect)) \
697 RTS_WIN64_ONLY(SymI_HasProto(SaveDC)) \
698 RTS_WIN64_ONLY(SymI_HasProto(SelectClipPath)) \
699 RTS_WIN64_ONLY(SymI_HasProto(SelectClipRgn)) \
700 RTS_WIN64_ONLY(SymI_HasProto(SelectObject)) \
701 RTS_WIN64_ONLY(SymI_HasProto(SelectPalette)) \
702 RTS_WIN64_ONLY(SymI_HasProto(SetArcDirection)) \
703 RTS_WIN64_ONLY(SymI_HasProto(SetBkColor)) \
704 RTS_WIN64_ONLY(SymI_HasProto(SetBkMode)) \
705 RTS_WIN64_ONLY(SymI_HasProto(SetBrushOrgEx)) \
706 RTS_WIN64_ONLY(SymI_HasProto(SetGraphicsMode)) \
707 RTS_WIN64_ONLY(SymI_HasProto(SetMiterLimit)) \
708 RTS_WIN64_ONLY(SymI_HasProto(SetPolyFillMode)) \
709 RTS_WIN64_ONLY(SymI_HasProto(SetStretchBltMode)) \
710 RTS_WIN64_ONLY(SymI_HasProto(SetTextAlign)) \
711 RTS_WIN64_ONLY(SymI_HasProto(SetTextCharacterExtra)) \
712 RTS_WIN64_ONLY(SymI_HasProto(SetTextColor)) \
713 RTS_WIN64_ONLY(SymI_HasProto(StretchBlt)) \
714 RTS_WIN64_ONLY(SymI_HasProto(StrokeAndFillPath)) \
715 RTS_WIN64_ONLY(SymI_HasProto(StrokePath)) \
716 RTS_WIN64_ONLY(SymI_HasProto(TextOutW)) \
717 RTS_WIN64_ONLY(SymI_HasProto(timeGetTime)) \
718 RTS_WIN64_ONLY(SymI_HasProto(WidenPath)) \
719 RTS_WIN64_ONLY(SymI_HasProto(GetFileSecurityW)) \
720 RTS_WIN64_ONLY(SymI_HasProto(RegCloseKey)) \
721 RTS_WIN64_ONLY(SymI_HasProto(RegConnectRegistryW)) \
722 RTS_WIN64_ONLY(SymI_HasProto(RegCreateKeyExW)) \
723 RTS_WIN64_ONLY(SymI_HasProto(RegCreateKeyW)) \
724 RTS_WIN64_ONLY(SymI_HasProto(RegDeleteKeyW)) \
725 RTS_WIN64_ONLY(SymI_HasProto(RegDeleteValueW)) \
726 RTS_WIN64_ONLY(SymI_HasProto(RegEnumKeyW)) \
727 RTS_WIN64_ONLY(SymI_HasProto(RegEnumValueW)) \
728 RTS_WIN64_ONLY(SymI_HasProto(RegFlushKey)) \
729 RTS_WIN64_ONLY(SymI_HasProto(RegLoadKeyW)) \
730 RTS_WIN64_ONLY(SymI_HasProto(RegNotifyChangeKeyValue)) \
731 RTS_WIN64_ONLY(SymI_HasProto(RegOpenKeyExW)) \
732 RTS_WIN64_ONLY(SymI_HasProto(RegOpenKeyW)) \
733 RTS_WIN64_ONLY(SymI_HasProto(RegQueryInfoKeyW)) \
734 RTS_WIN64_ONLY(SymI_HasProto(RegQueryValueExW)) \
735 RTS_WIN64_ONLY(SymI_HasProto(RegQueryValueW)) \
736 RTS_WIN64_ONLY(SymI_HasProto(RegReplaceKeyW)) \
737 RTS_WIN64_ONLY(SymI_HasProto(RegRestoreKeyW)) \
738 RTS_WIN64_ONLY(SymI_HasProto(RegSaveKeyW)) \
739 RTS_WIN64_ONLY(SymI_HasProto(RegSetValueExW)) \
740 RTS_WIN64_ONLY(SymI_HasProto(RegSetValueW)) \
741 RTS_WIN64_ONLY(SymI_HasProto(RegUnLoadKeyW)) \
742 RTS_WIN64_ONLY(SymI_NeedsProto(SHGetFolderPathW)) \
743 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetWindowLongPtrW)) \
744 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetWindowLongPtrW)) \
745 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_MenuItemFromPoint)) \
746 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ChildWindowFromPoint)) \
747 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_ChildWindowFromPointEx)) \
748 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DeleteObject)) \
749 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_UnmapViewOfFile)) \
750 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CloseHandle)) \
751 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FreeLibrary)) \
752 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetMessageW)) \
753 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_TranslateMessage)) \
754 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DispatchMessageW)) \
755 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DefWindowProcW)) \
756 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetDIBits)) \
757 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GlobalAlloc)) \
758 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GlobalFree)) \
759 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateFileW)) \
760 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_WriteFile)) \
761 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateCompatibleBitmap)) \
762 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SelectObject)) \
763 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_Polygon)) \
764 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_FormatMessageW)) \
765 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__localtime64)) \
766 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__tzname)) \
767 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__timezone)) \
768 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreatePipe)) \
769 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_SetHandleInformation)) \
770 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetStdHandle)) \
771 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetCurrentProcess)) \
772 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_DuplicateHandle)) \
773 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_CreateProcessW)) \
774 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_TerminateProcess)) \
775 RTS_WIN64_ONLY(SymI_NeedsProto(__imp__open_osfhandle)) \
776 RTS_WIN64_ONLY(SymI_NeedsProto(__imp_GetExitCodeProcess)) \
777 RTS_MINGW_GETTIMEOFDAY_SYM \
778 SymI_NeedsProto(closedir)
779
780 #else
781 #define RTS_MINGW_ONLY_SYMBOLS /**/
782 #define RTS_CYGWIN_ONLY_SYMBOLS /**/
783 #endif
784
785
786 #if defined(darwin_HOST_OS) && HAVE_PRINTF_LDBLSTUB
787 #define RTS_DARWIN_ONLY_SYMBOLS \
788 SymI_NeedsProto(asprintf$LDBLStub) \
789 SymI_NeedsProto(err$LDBLStub) \
790 SymI_NeedsProto(errc$LDBLStub) \
791 SymI_NeedsProto(errx$LDBLStub) \
792 SymI_NeedsProto(fprintf$LDBLStub) \
793 SymI_NeedsProto(fscanf$LDBLStub) \
794 SymI_NeedsProto(fwprintf$LDBLStub) \
795 SymI_NeedsProto(fwscanf$LDBLStub) \
796 SymI_NeedsProto(printf$LDBLStub) \
797 SymI_NeedsProto(scanf$LDBLStub) \
798 SymI_NeedsProto(snprintf$LDBLStub) \
799 SymI_NeedsProto(sprintf$LDBLStub) \
800 SymI_NeedsProto(sscanf$LDBLStub) \
801 SymI_NeedsProto(strtold$LDBLStub) \
802 SymI_NeedsProto(swprintf$LDBLStub) \
803 SymI_NeedsProto(swscanf$LDBLStub) \
804 SymI_NeedsProto(syslog$LDBLStub) \
805 SymI_NeedsProto(vasprintf$LDBLStub) \
806 SymI_NeedsProto(verr$LDBLStub) \
807 SymI_NeedsProto(verrc$LDBLStub) \
808 SymI_NeedsProto(verrx$LDBLStub) \
809 SymI_NeedsProto(vfprintf$LDBLStub) \
810 SymI_NeedsProto(vfscanf$LDBLStub) \
811 SymI_NeedsProto(vfwprintf$LDBLStub) \
812 SymI_NeedsProto(vfwscanf$LDBLStub) \
813 SymI_NeedsProto(vprintf$LDBLStub) \
814 SymI_NeedsProto(vscanf$LDBLStub) \
815 SymI_NeedsProto(vsnprintf$LDBLStub) \
816 SymI_NeedsProto(vsprintf$LDBLStub) \
817 SymI_NeedsProto(vsscanf$LDBLStub) \
818 SymI_NeedsProto(vswprintf$LDBLStub) \
819 SymI_NeedsProto(vswscanf$LDBLStub) \
820 SymI_NeedsProto(vsyslog$LDBLStub) \
821 SymI_NeedsProto(vwarn$LDBLStub) \
822 SymI_NeedsProto(vwarnc$LDBLStub) \
823 SymI_NeedsProto(vwarnx$LDBLStub) \
824 SymI_NeedsProto(vwprintf$LDBLStub) \
825 SymI_NeedsProto(vwscanf$LDBLStub) \
826 SymI_NeedsProto(warn$LDBLStub) \
827 SymI_NeedsProto(warnc$LDBLStub) \
828 SymI_NeedsProto(warnx$LDBLStub) \
829 SymI_NeedsProto(wcstold$LDBLStub) \
830 SymI_NeedsProto(wprintf$LDBLStub) \
831 SymI_NeedsProto(wscanf$LDBLStub)
832 #else
833 #define RTS_DARWIN_ONLY_SYMBOLS
834 #endif
835
836 #ifndef SMP
837 # define MAIN_CAP_SYM SymI_HasProto(MainCapability)
838 #else
839 # define MAIN_CAP_SYM
840 #endif
841
842 #if !defined(mingw32_HOST_OS)
843 #define RTS_USER_SIGNALS_SYMBOLS \
844 SymI_HasProto(setIOManagerControlFd) \
845 SymI_HasProto(setIOManagerWakeupFd) \
846 SymI_HasProto(ioManagerWakeup) \
847 SymI_HasProto(blockUserSignals) \
848 SymI_HasProto(unblockUserSignals)
849 #else
850 #define RTS_USER_SIGNALS_SYMBOLS \
851 SymI_HasProto(ioManagerWakeup) \
852 SymI_HasProto(sendIOManagerEvent) \
853 SymI_HasProto(readIOManagerEvent) \
854 SymI_HasProto(getIOManagerEvent) \
855 SymI_HasProto(console_handler)
856 #endif
857
858 #define RTS_LIBFFI_SYMBOLS \
859 SymE_NeedsProto(ffi_prep_cif) \
860 SymE_NeedsProto(ffi_call) \
861 SymE_NeedsProto(ffi_type_void) \
862 SymE_NeedsProto(ffi_type_float) \
863 SymE_NeedsProto(ffi_type_double) \
864 SymE_NeedsProto(ffi_type_sint64) \
865 SymE_NeedsProto(ffi_type_uint64) \
866 SymE_NeedsProto(ffi_type_sint32) \
867 SymE_NeedsProto(ffi_type_uint32) \
868 SymE_NeedsProto(ffi_type_sint16) \
869 SymE_NeedsProto(ffi_type_uint16) \
870 SymE_NeedsProto(ffi_type_sint8) \
871 SymE_NeedsProto(ffi_type_uint8) \
872 SymE_NeedsProto(ffi_type_pointer)
873
874 #ifdef TABLES_NEXT_TO_CODE
875 #define RTS_RET_SYMBOLS /* nothing */
876 #else
877 #define RTS_RET_SYMBOLS \
878 SymI_HasProto(stg_enter_ret) \
879 SymI_HasProto(stg_gc_fun_ret) \
880 SymI_HasProto(stg_ap_v_ret) \
881 SymI_HasProto(stg_ap_f_ret) \
882 SymI_HasProto(stg_ap_d_ret) \
883 SymI_HasProto(stg_ap_l_ret) \
884 SymI_HasProto(stg_ap_v16_ret) \
885 SymI_HasProto(stg_ap_n_ret) \
886 SymI_HasProto(stg_ap_p_ret) \
887 SymI_HasProto(stg_ap_pv_ret) \
888 SymI_HasProto(stg_ap_pp_ret) \
889 SymI_HasProto(stg_ap_ppv_ret) \
890 SymI_HasProto(stg_ap_ppp_ret) \
891 SymI_HasProto(stg_ap_pppv_ret) \
892 SymI_HasProto(stg_ap_pppp_ret) \
893 SymI_HasProto(stg_ap_ppppp_ret) \
894 SymI_HasProto(stg_ap_pppppp_ret)
895 #endif
896
897 /* Modules compiled with -ticky may mention ticky counters */
898 /* This list should marry up with the one in $(TOP)/includes/stg/Ticky.h */
899 #define RTS_TICKY_SYMBOLS \
900 SymI_NeedsProto(ticky_entry_ctrs) \
901 SymI_NeedsProto(top_ct) \
902 \
903 SymI_HasProto(ENT_VIA_NODE_ctr) \
904 SymI_HasProto(ENT_STATIC_THK_ctr) \
905 SymI_HasProto(ENT_DYN_THK_ctr) \
906 SymI_HasProto(ENT_STATIC_FUN_DIRECT_ctr) \
907 SymI_HasProto(ENT_DYN_FUN_DIRECT_ctr) \
908 SymI_HasProto(ENT_STATIC_CON_ctr) \
909 SymI_HasProto(ENT_DYN_CON_ctr) \
910 SymI_HasProto(ENT_STATIC_IND_ctr) \
911 SymI_HasProto(ENT_DYN_IND_ctr) \
912 SymI_HasProto(ENT_PERM_IND_ctr) \
913 SymI_HasProto(ENT_PAP_ctr) \
914 SymI_HasProto(ENT_AP_ctr) \
915 SymI_HasProto(ENT_AP_STACK_ctr) \
916 SymI_HasProto(ENT_BH_ctr) \
917 SymI_HasProto(ENT_LNE_ctr) \
918 SymI_HasProto(UNKNOWN_CALL_ctr) \
919 SymI_HasProto(SLOW_CALL_fast_v16_ctr) \
920 SymI_HasProto(SLOW_CALL_fast_v_ctr) \
921 SymI_HasProto(SLOW_CALL_fast_f_ctr) \
922 SymI_HasProto(SLOW_CALL_fast_d_ctr) \
923 SymI_HasProto(SLOW_CALL_fast_l_ctr) \
924 SymI_HasProto(SLOW_CALL_fast_n_ctr) \
925 SymI_HasProto(SLOW_CALL_fast_p_ctr) \
926 SymI_HasProto(SLOW_CALL_fast_pv_ctr) \
927 SymI_HasProto(SLOW_CALL_fast_pp_ctr) \
928 SymI_HasProto(SLOW_CALL_fast_ppv_ctr) \
929 SymI_HasProto(SLOW_CALL_fast_ppp_ctr) \
930 SymI_HasProto(SLOW_CALL_fast_pppv_ctr) \
931 SymI_HasProto(SLOW_CALL_fast_pppp_ctr) \
932 SymI_HasProto(SLOW_CALL_fast_ppppp_ctr) \
933 SymI_HasProto(SLOW_CALL_fast_pppppp_ctr) \
934 SymI_HasProto(VERY_SLOW_CALL_ctr) \
935 SymI_HasProto(ticky_slow_call_unevald) \
936 SymI_HasProto(SLOW_CALL_ctr) \
937 SymI_HasProto(MULTI_CHUNK_SLOW_CALL_ctr) \
938 SymI_HasProto(MULTI_CHUNK_SLOW_CALL_CHUNKS_ctr) \
939 SymI_HasProto(KNOWN_CALL_ctr) \
940 SymI_HasProto(KNOWN_CALL_TOO_FEW_ARGS_ctr) \
941 SymI_HasProto(KNOWN_CALL_EXTRA_ARGS_ctr) \
942 SymI_HasProto(SLOW_CALL_FUN_TOO_FEW_ctr) \
943 SymI_HasProto(SLOW_CALL_FUN_CORRECT_ctr) \
944 SymI_HasProto(SLOW_CALL_FUN_TOO_MANY_ctr) \
945 SymI_HasProto(SLOW_CALL_PAP_TOO_FEW_ctr) \
946 SymI_HasProto(SLOW_CALL_PAP_CORRECT_ctr) \
947 SymI_HasProto(SLOW_CALL_PAP_TOO_MANY_ctr) \
948 SymI_HasProto(SLOW_CALL_UNEVALD_ctr) \
949 SymI_HasProto(UPDF_OMITTED_ctr) \
950 SymI_HasProto(UPDF_PUSHED_ctr) \
951 SymI_HasProto(CATCHF_PUSHED_ctr) \
952 SymI_HasProto(UPDF_RCC_PUSHED_ctr) \
953 SymI_HasProto(UPDF_RCC_OMITTED_ctr) \
954 SymI_HasProto(UPD_SQUEEZED_ctr) \
955 SymI_HasProto(UPD_CON_IN_NEW_ctr) \
956 SymI_HasProto(UPD_CON_IN_PLACE_ctr) \
957 SymI_HasProto(UPD_PAP_IN_NEW_ctr) \
958 SymI_HasProto(UPD_PAP_IN_PLACE_ctr) \
959 SymI_HasProto(ALLOC_HEAP_ctr) \
960 SymI_HasProto(ALLOC_HEAP_tot) \
961 SymI_HasProto(HEAP_CHK_ctr) \
962 SymI_HasProto(STK_CHK_ctr) \
963 SymI_HasProto(ALLOC_RTS_ctr) \
964 SymI_HasProto(ALLOC_RTS_tot) \
965 SymI_HasProto(ALLOC_FUN_ctr) \
966 SymI_HasProto(ALLOC_FUN_adm) \
967 SymI_HasProto(ALLOC_FUN_gds) \
968 SymI_HasProto(ALLOC_FUN_slp) \
969 SymI_HasProto(UPD_NEW_IND_ctr) \
970 SymI_HasProto(UPD_NEW_PERM_IND_ctr) \
971 SymI_HasProto(UPD_OLD_IND_ctr) \
972 SymI_HasProto(UPD_OLD_PERM_IND_ctr) \
973 SymI_HasProto(UPD_BH_UPDATABLE_ctr) \
974 SymI_HasProto(UPD_BH_SINGLE_ENTRY_ctr) \
975 SymI_HasProto(UPD_CAF_BH_UPDATABLE_ctr) \
976 SymI_HasProto(UPD_CAF_BH_SINGLE_ENTRY_ctr) \
977 SymI_HasProto(GC_SEL_ABANDONED_ctr) \
978 SymI_HasProto(GC_SEL_MINOR_ctr) \
979 SymI_HasProto(GC_SEL_MAJOR_ctr) \
980 SymI_HasProto(GC_FAILED_PROMOTION_ctr) \
981 SymI_HasProto(ALLOC_UP_THK_ctr) \
982 SymI_HasProto(ALLOC_SE_THK_ctr) \
983 SymI_HasProto(ALLOC_THK_adm) \
984 SymI_HasProto(ALLOC_THK_gds) \
985 SymI_HasProto(ALLOC_THK_slp) \
986 SymI_HasProto(ALLOC_CON_ctr) \
987 SymI_HasProto(ALLOC_CON_adm) \
988 SymI_HasProto(ALLOC_CON_gds) \
989 SymI_HasProto(ALLOC_CON_slp) \
990 SymI_HasProto(ALLOC_TUP_ctr) \
991 SymI_HasProto(ALLOC_TUP_adm) \
992 SymI_HasProto(ALLOC_TUP_gds) \
993 SymI_HasProto(ALLOC_TUP_slp) \
994 SymI_HasProto(ALLOC_BH_ctr) \
995 SymI_HasProto(ALLOC_BH_adm) \
996 SymI_HasProto(ALLOC_BH_gds) \
997 SymI_HasProto(ALLOC_BH_slp) \
998 SymI_HasProto(ALLOC_PRIM_ctr) \
999 SymI_HasProto(ALLOC_PRIM_adm) \
1000 SymI_HasProto(ALLOC_PRIM_gds) \
1001 SymI_HasProto(ALLOC_PRIM_slp) \
1002 SymI_HasProto(ALLOC_PAP_ctr) \
1003 SymI_HasProto(ALLOC_PAP_adm) \
1004 SymI_HasProto(ALLOC_PAP_gds) \
1005 SymI_HasProto(ALLOC_PAP_slp) \
1006 SymI_HasProto(ALLOC_TSO_ctr) \
1007 SymI_HasProto(ALLOC_TSO_adm) \
1008 SymI_HasProto(ALLOC_TSO_gds) \
1009 SymI_HasProto(ALLOC_TSO_slp) \
1010 SymI_HasProto(RET_NEW_ctr) \
1011 SymI_HasProto(RET_OLD_ctr) \
1012 SymI_HasProto(RET_UNBOXED_TUP_ctr) \
1013 SymI_HasProto(RET_SEMI_loads_avoided)
1014
1015
1016 // On most platforms, the garbage collector rewrites references
1017 // to small integer and char objects to a set of common, shared ones.
1018 //
1019 // We don't do this when compiling to Windows DLLs at the moment because
1020 // it doesn't support cross package data references well.
1021 //
1022 #if defined(COMPILING_WINDOWS_DLL)
1023 #define RTS_INTCHAR_SYMBOLS
1024 #else
1025 #define RTS_INTCHAR_SYMBOLS \
1026 SymI_HasProto(stg_CHARLIKE_closure) \
1027 SymI_HasProto(stg_INTLIKE_closure)
1028 #endif
1029
1030
1031 #define RTS_SYMBOLS \
1032 Maybe_Stable_Names \
1033 RTS_TICKY_SYMBOLS \
1034 SymI_HasProto(StgReturn) \
1035 SymI_HasProto(stg_gc_noregs) \
1036 SymI_HasProto(stg_ret_v_info) \
1037 SymI_HasProto(stg_ret_p_info) \
1038 SymI_HasProto(stg_ret_n_info) \
1039 SymI_HasProto(stg_ret_f_info) \
1040 SymI_HasProto(stg_ret_d_info) \
1041 SymI_HasProto(stg_ret_l_info) \
1042 SymI_HasProto(stg_gc_prim_p) \
1043 SymI_HasProto(stg_gc_prim_pp) \
1044 SymI_HasProto(stg_gc_prim_n) \
1045 SymI_HasProto(stg_enter_info) \
1046 SymI_HasProto(__stg_gc_enter_1) \
1047 SymI_HasProto(stg_gc_unpt_r1) \
1048 SymI_HasProto(stg_gc_unbx_r1) \
1049 SymI_HasProto(stg_gc_f1) \
1050 SymI_HasProto(stg_gc_d1) \
1051 SymI_HasProto(stg_gc_l1) \
1052 SymI_HasProto(stg_gc_pp) \
1053 SymI_HasProto(stg_gc_ppp) \
1054 SymI_HasProto(stg_gc_pppp) \
1055 SymI_HasProto(__stg_gc_fun) \
1056 SymI_HasProto(stg_gc_fun_info) \
1057 SymI_HasProto(stg_yield_noregs) \
1058 SymI_HasProto(stg_yield_to_interpreter) \
1059 SymI_HasProto(stg_block_noregs) \
1060 SymI_HasProto(stg_block_takemvar) \
1061 SymI_HasProto(stg_block_putmvar) \
1062 MAIN_CAP_SYM \
1063 SymI_HasProto(MallocFailHook) \
1064 SymI_HasProto(OnExitHook) \
1065 SymI_HasProto(OutOfHeapHook) \
1066 SymI_HasProto(StackOverflowHook) \
1067 SymI_HasProto(addDLL) \
1068 SymI_HasProto(__int_encodeDouble) \
1069 SymI_HasProto(__word_encodeDouble) \
1070 SymI_HasProto(__2Int_encodeDouble) \
1071 SymI_HasProto(__int_encodeFloat) \
1072 SymI_HasProto(__word_encodeFloat) \
1073 SymI_HasProto(stg_atomicallyzh) \
1074 SymI_HasProto(barf) \
1075 SymI_HasProto(debugBelch) \
1076 SymI_HasProto(errorBelch) \
1077 SymI_HasProto(sysErrorBelch) \
1078 SymI_HasProto(stg_getMaskingStatezh) \
1079 SymI_HasProto(stg_maskAsyncExceptionszh) \
1080 SymI_HasProto(stg_maskUninterruptiblezh) \
1081 SymI_HasProto(stg_catchzh) \
1082 SymI_HasProto(stg_catchRetryzh) \
1083 SymI_HasProto(stg_catchSTMzh) \
1084 SymI_HasProto(stg_checkzh) \
1085 SymI_HasProto(closure_flags) \
1086 SymI_HasProto(cmp_thread) \
1087 SymI_HasProto(createAdjustor) \
1088 SymI_HasProto(stg_decodeDoublezu2Intzh) \
1089 SymI_HasProto(stg_decodeFloatzuIntzh) \
1090 SymI_HasProto(defaultsHook) \
1091 SymI_HasProto(stg_delayzh) \
1092 SymI_HasProto(stg_deRefWeakzh) \
1093 SymI_HasProto(stg_deRefStablePtrzh) \
1094 SymI_HasProto(dirty_MUT_VAR) \
1095 SymI_HasProto(dirty_TVAR) \
1096 SymI_HasProto(stg_forkzh) \
1097 SymI_HasProto(stg_forkOnzh) \
1098 SymI_HasProto(forkProcess) \
1099 SymI_HasProto(forkOS_createThread) \
1100 SymI_HasProto(freeHaskellFunctionPtr) \
1101 SymI_HasProto(getOrSetGHCConcSignalSignalHandlerStore) \
1102 SymI_HasProto(getOrSetGHCConcWindowsPendingDelaysStore) \
1103 SymI_HasProto(getOrSetGHCConcWindowsIOManagerThreadStore) \
1104 SymI_HasProto(getOrSetGHCConcWindowsProddingStore) \
1105 SymI_HasProto(getOrSetSystemEventThreadEventManagerStore) \
1106 SymI_HasProto(getOrSetSystemEventThreadIOManagerThreadStore) \
1107 SymI_HasProto(getOrSetSystemTimerThreadEventManagerStore) \
1108 SymI_HasProto(getOrSetSystemTimerThreadIOManagerThreadStore) \
1109 SymI_HasProto(getGCStats) \
1110 SymI_HasProto(getGCStatsEnabled) \
1111 SymI_HasProto(genSymZh) \
1112 SymI_HasProto(genericRaise) \
1113 SymI_HasProto(getProgArgv) \
1114 SymI_HasProto(getFullProgArgv) \
1115 SymI_HasProto(getStablePtr) \
1116 SymI_HasProto(hs_init) \
1117 SymI_HasProto(hs_exit) \
1118 SymI_HasProto(hs_set_argv) \
1119 SymI_HasProto(hs_add_root) \
1120 SymI_HasProto(hs_perform_gc) \
1121 SymI_HasProto(hs_lock_stable_tables) \
1122 SymI_HasProto(hs_unlock_stable_tables) \
1123 SymI_HasProto(hs_free_stable_ptr) \
1124 SymI_HasProto(hs_free_stable_ptr_unsafe) \
1125 SymI_HasProto(hs_free_fun_ptr) \
1126 SymI_HasProto(hs_hpc_rootModule) \
1127 SymI_HasProto(hs_hpc_module) \
1128 SymI_HasProto(initLinker) \
1129 SymI_HasProto(stg_unpackClosurezh) \
1130 SymI_HasProto(stg_getApStackValzh) \
1131 SymI_HasProto(stg_getSparkzh) \
1132 SymI_HasProto(stg_numSparkszh) \
1133 SymI_HasProto(stg_isCurrentThreadBoundzh) \
1134 SymI_HasProto(stg_isEmptyMVarzh) \
1135 SymI_HasProto(stg_killThreadzh) \
1136 SymI_HasProto(loadArchive) \
1137 SymI_HasProto(loadObj) \
1138 SymI_HasProto(insertStableSymbol) \
1139 SymI_HasProto(insertSymbol) \
1140 SymI_HasProto(lookupSymbol) \
1141 SymI_HasProto(stg_makeStablePtrzh) \
1142 SymI_HasProto(stg_mkApUpd0zh) \
1143 SymI_HasProto(stg_myThreadIdzh) \
1144 SymI_HasProto(stg_labelThreadzh) \
1145 SymI_HasProto(stg_newArrayzh) \
1146 SymI_HasProto(stg_newArrayArrayzh) \
1147 SymI_HasProto(stg_newBCOzh) \
1148 SymI_HasProto(stg_newByteArrayzh) \
1149 SymI_HasProto_redirect(newCAF, newDynCAF) \
1150 SymI_HasProto(stg_newMVarzh) \
1151 SymI_HasProto(stg_newMutVarzh) \
1152 SymI_HasProto(stg_newTVarzh) \
1153 SymI_HasProto(stg_noDuplicatezh) \
1154 SymI_HasProto(stg_atomicModifyMutVarzh) \
1155 SymI_HasProto(stg_casMutVarzh) \
1156 SymI_HasProto(stg_newPinnedByteArrayzh) \
1157 SymI_HasProto(stg_newAlignedPinnedByteArrayzh) \
1158 SymI_HasProto(newSpark) \
1159 SymI_HasProto(performGC) \
1160 SymI_HasProto(performMajorGC) \
1161 SymI_HasProto(prog_argc) \
1162 SymI_HasProto(prog_argv) \
1163 SymI_HasProto(stg_putMVarzh) \
1164 SymI_HasProto(stg_raisezh) \
1165 SymI_HasProto(stg_raiseIOzh) \
1166 SymI_HasProto(stg_readTVarzh) \
1167 SymI_HasProto(stg_readTVarIOzh) \
1168 SymI_HasProto(resumeThread) \
1169 SymI_HasProto(setNumCapabilities) \
1170 SymI_HasProto(getNumberOfProcessors) \
1171 SymI_HasProto(resolveObjs) \
1172 SymI_HasProto(stg_retryzh) \
1173 SymI_HasProto(rts_apply) \
1174 SymI_HasProto(rts_checkSchedStatus) \
1175 SymI_HasProto(rts_eval) \
1176 SymI_HasProto(rts_evalIO) \
1177 SymI_HasProto(rts_evalLazyIO) \
1178 SymI_HasProto(rts_evalStableIO) \
1179 SymI_HasProto(rts_eval_) \
1180 SymI_HasProto(rts_getBool) \
1181 SymI_HasProto(rts_getChar) \
1182 SymI_HasProto(rts_getDouble) \
1183 SymI_HasProto(rts_getFloat) \
1184 SymI_HasProto(rts_getInt) \
1185 SymI_HasProto(rts_getInt8) \
1186 SymI_HasProto(rts_getInt16) \
1187 SymI_HasProto(rts_getInt32) \
1188 SymI_HasProto(rts_getInt64) \
1189 SymI_HasProto(rts_getPtr) \
1190 SymI_HasProto(rts_getFunPtr) \
1191 SymI_HasProto(rts_getStablePtr) \
1192 SymI_HasProto(rts_getThreadId) \
1193 SymI_HasProto(rts_getWord) \
1194 SymI_HasProto(rts_getWord8) \
1195 SymI_HasProto(rts_getWord16) \
1196 SymI_HasProto(rts_getWord32) \
1197 SymI_HasProto(rts_getWord64) \
1198 SymI_HasProto(rts_lock) \
1199 SymI_HasProto(rts_mkBool) \
1200 SymI_HasProto(rts_mkChar) \
1201 SymI_HasProto(rts_mkDouble) \
1202 SymI_HasProto(rts_mkFloat) \
1203 SymI_HasProto(rts_mkInt) \
1204 SymI_HasProto(rts_mkInt8) \
1205 SymI_HasProto(rts_mkInt16) \
1206 SymI_HasProto(rts_mkInt32) \
1207 SymI_HasProto(rts_mkInt64) \
1208 SymI_HasProto(rts_mkPtr) \
1209 SymI_HasProto(rts_mkFunPtr) \
1210 SymI_HasProto(rts_mkStablePtr) \
1211 SymI_HasProto(rts_mkString) \
1212 SymI_HasProto(rts_mkWord) \
1213 SymI_HasProto(rts_mkWord8) \
1214 SymI_HasProto(rts_mkWord16) \
1215 SymI_HasProto(rts_mkWord32) \
1216 SymI_HasProto(rts_mkWord64) \
1217 SymI_HasProto(rts_unlock) \
1218 SymI_HasProto(rts_unsafeGetMyCapability) \
1219 SymI_HasProto(rtsSupportsBoundThreads) \
1220 SymI_HasProto(rts_isProfiled) \
1221 SymI_HasProto(setProgArgv) \
1222 SymI_HasProto(startupHaskell) \
1223 SymI_HasProto(shutdownHaskell) \
1224 SymI_HasProto(shutdownHaskellAndExit) \
1225 SymI_HasProto(stable_name_table) \
1226 SymI_HasProto(stable_ptr_table) \
1227 SymI_HasProto(stackOverflow) \
1228 SymI_HasProto(stg_CAF_BLACKHOLE_info) \
1229 SymI_HasProto(stg_BLACKHOLE_info) \
1230 SymI_HasProto(__stg_EAGER_BLACKHOLE_info) \
1231 SymI_HasProto(stg_BLOCKING_QUEUE_CLEAN_info) \
1232 SymI_HasProto(stg_BLOCKING_QUEUE_DIRTY_info) \
1233 SymI_HasProto(startTimer) \
1234 SymI_HasProto(stg_MVAR_CLEAN_info) \
1235 SymI_HasProto(stg_MVAR_DIRTY_info) \
1236 SymI_HasProto(stg_TVAR_CLEAN_info) \
1237 SymI_HasProto(stg_TVAR_DIRTY_info) \
1238 SymI_HasProto(stg_IND_STATIC_info) \
1239 SymI_HasProto(stg_ARR_WORDS_info) \
1240 SymI_HasProto(stg_MUT_ARR_PTRS_DIRTY_info) \
1241 SymI_HasProto(stg_MUT_ARR_PTRS_FROZEN_info) \
1242 SymI_HasProto(stg_MUT_ARR_PTRS_FROZEN0_info) \
1243 SymI_HasProto(stg_WEAK_info) \
1244 SymI_HasProto(stg_ap_v_info) \
1245 SymI_HasProto(stg_ap_f_info) \
1246 SymI_HasProto(stg_ap_d_info) \
1247 SymI_HasProto(stg_ap_l_info) \
1248 SymI_HasProto(stg_ap_v16_info) \
1249 SymI_HasProto(stg_ap_n_info) \
1250 SymI_HasProto(stg_ap_p_info) \
1251 SymI_HasProto(stg_ap_pv_info) \
1252 SymI_HasProto(stg_ap_pp_info) \
1253 SymI_HasProto(stg_ap_ppv_info) \
1254 SymI_HasProto(stg_ap_ppp_info) \
1255 SymI_HasProto(stg_ap_pppv_info) \
1256 SymI_HasProto(stg_ap_pppp_info) \
1257 SymI_HasProto(stg_ap_ppppp_info) \
1258 SymI_HasProto(stg_ap_pppppp_info) \
1259 SymI_HasProto(stg_ap_0_fast) \
1260 SymI_HasProto(stg_ap_v_fast) \
1261 SymI_HasProto(stg_ap_f_fast) \
1262 SymI_HasProto(stg_ap_d_fast) \
1263 SymI_HasProto(stg_ap_l_fast) \
1264 SymI_HasProto(stg_ap_v16_fast) \
1265 SymI_HasProto(stg_ap_n_fast) \
1266 SymI_HasProto(stg_ap_p_fast) \
1267 SymI_HasProto(stg_ap_pv_fast) \
1268 SymI_HasProto(stg_ap_pp_fast) \
1269 SymI_HasProto(stg_ap_ppv_fast) \
1270 SymI_HasProto(stg_ap_ppp_fast) \
1271 SymI_HasProto(stg_ap_pppv_fast) \
1272 SymI_HasProto(stg_ap_pppp_fast) \
1273 SymI_HasProto(stg_ap_ppppp_fast) \
1274 SymI_HasProto(stg_ap_pppppp_fast) \
1275 SymI_HasProto(stg_ap_1_upd_info) \
1276 SymI_HasProto(stg_ap_2_upd_info) \
1277 SymI_HasProto(stg_ap_3_upd_info) \
1278 SymI_HasProto(stg_ap_4_upd_info) \
1279 SymI_HasProto(stg_ap_5_upd_info) \
1280 SymI_HasProto(stg_ap_6_upd_info) \
1281 SymI_HasProto(stg_ap_7_upd_info) \
1282 SymI_HasProto(stg_exit) \
1283 SymI_HasProto(stg_sel_0_upd_info) \
1284 SymI_HasProto(stg_sel_1_upd_info) \
1285 SymI_HasProto(stg_sel_2_upd_info) \
1286 SymI_HasProto(stg_sel_3_upd_info) \
1287 SymI_HasProto(stg_sel_4_upd_info) \
1288 SymI_HasProto(stg_sel_5_upd_info) \
1289 SymI_HasProto(stg_sel_6_upd_info) \
1290 SymI_HasProto(stg_sel_7_upd_info) \
1291 SymI_HasProto(stg_sel_8_upd_info) \
1292 SymI_HasProto(stg_sel_9_upd_info) \
1293 SymI_HasProto(stg_sel_10_upd_info) \
1294 SymI_HasProto(stg_sel_11_upd_info) \
1295 SymI_HasProto(stg_sel_12_upd_info) \
1296 SymI_HasProto(stg_sel_13_upd_info) \
1297 SymI_HasProto(stg_sel_14_upd_info) \
1298 SymI_HasProto(stg_sel_15_upd_info) \
1299 SymI_HasProto(stg_sel_0_noupd_info) \
1300 SymI_HasProto(stg_sel_1_noupd_info) \
1301 SymI_HasProto(stg_sel_2_noupd_info) \
1302 SymI_HasProto(stg_sel_3_noupd_info) \
1303 SymI_HasProto(stg_sel_4_noupd_info) \
1304 SymI_HasProto(stg_sel_5_noupd_info) \
1305 SymI_HasProto(stg_sel_6_noupd_info) \
1306 SymI_HasProto(stg_sel_7_noupd_info) \
1307 SymI_HasProto(stg_sel_8_noupd_info) \
1308 SymI_HasProto(stg_sel_9_noupd_info) \
1309 SymI_HasProto(stg_sel_10_noupd_info) \
1310 SymI_HasProto(stg_sel_11_noupd_info) \
1311 SymI_HasProto(stg_sel_12_noupd_info) \
1312 SymI_HasProto(stg_sel_13_noupd_info) \
1313 SymI_HasProto(stg_sel_14_noupd_info) \
1314 SymI_HasProto(stg_sel_15_noupd_info) \
1315 SymI_HasProto(stg_upd_frame_info) \
1316 SymI_HasProto(stg_bh_upd_frame_info) \
1317 SymI_HasProto(suspendThread) \
1318 SymI_HasProto(stg_takeMVarzh) \
1319 SymI_HasProto(stg_threadStatuszh) \
1320 SymI_HasProto(stg_tryPutMVarzh) \
1321 SymI_HasProto(stg_tryTakeMVarzh) \
1322 SymI_HasProto(stg_unmaskAsyncExceptionszh) \
1323 SymI_HasProto(unloadObj) \
1324 SymI_HasProto(stg_unsafeThawArrayzh) \
1325 SymI_HasProto(stg_waitReadzh) \
1326 SymI_HasProto(stg_waitWritezh) \
1327 SymI_HasProto(stg_writeTVarzh) \
1328 SymI_HasProto(stg_yieldzh) \
1329 SymI_NeedsProto(stg_interp_constr_entry) \
1330 SymI_HasProto(stg_arg_bitmaps) \
1331 SymI_HasProto(large_alloc_lim) \
1332 SymI_HasProto(g0) \
1333 SymI_HasProto(allocate) \
1334 SymI_HasProto(allocateExec) \
1335 SymI_HasProto(freeExec) \
1336 SymI_HasProto(getAllocations) \
1337 SymI_HasProto(revertCAFs) \
1338 SymI_HasProto(RtsFlags) \
1339 SymI_NeedsProto(rts_breakpoint_io_action) \
1340 SymI_NeedsProto(rts_stop_next_breakpoint) \
1341 SymI_NeedsProto(rts_stop_on_exception) \
1342 SymI_HasProto(stopTimer) \
1343 SymI_HasProto(n_capabilities) \
1344 SymI_HasProto(enabled_capabilities) \
1345 SymI_HasProto(stg_traceCcszh) \
1346 SymI_HasProto(stg_traceEventzh) \
1347 SymI_HasProto(stg_traceMarkerzh) \
1348 SymI_HasProto(getMonotonicNSec) \
1349 SymI_HasProto(lockFile) \
1350 SymI_HasProto(unlockFile) \
1351 SymI_HasProto(startProfTimer) \
1352 SymI_HasProto(stopProfTimer) \
1353 RTS_USER_SIGNALS_SYMBOLS \
1354 RTS_INTCHAR_SYMBOLS
1355
1356
1357 // 64-bit support functions in libgcc.a
1358 #if defined(__GNUC__) && SIZEOF_VOID_P <= 4 && !defined(_ABIN32)
1359 #define RTS_LIBGCC_SYMBOLS \
1360 SymI_NeedsProto(__divdi3) \
1361 SymI_NeedsProto(__udivdi3) \
1362 SymI_NeedsProto(__moddi3) \
1363 SymI_NeedsProto(__umoddi3) \
1364 SymI_NeedsProto(__muldi3) \
1365 SymI_NeedsProto(__ashldi3) \
1366 SymI_NeedsProto(__ashrdi3) \
1367 SymI_NeedsProto(__lshrdi3) \
1368 SymI_NeedsProto(__fixunsdfdi)
1369 #else
1370 #define RTS_LIBGCC_SYMBOLS
1371 #endif
1372
1373 #if defined(darwin_HOST_OS) && defined(powerpc_HOST_ARCH)
1374 // Symbols that don't have a leading underscore
1375 // on Mac OS X. They have to receive special treatment,
1376 // see machoInitSymbolsWithoutUnderscore()
1377 #define RTS_MACHO_NOUNDERLINE_SYMBOLS \
1378 SymI_NeedsProto(saveFP) \
1379 SymI_NeedsProto(restFP)
1380 #endif
1381
1382 /* entirely bogus claims about types of these symbols */
1383 #define SymI_NeedsProto(vvv) extern void vvv(void);
1384 #if defined(COMPILING_WINDOWS_DLL)
1385 #define SymE_HasProto(vvv) SymE_HasProto(vvv);
1386 # if defined(x86_64_HOST_ARCH)
1387 # define SymE_NeedsProto(vvv) extern void __imp_ ## vvv (void);
1388 # else
1389 # define SymE_NeedsProto(vvv) extern void _imp__ ## vvv (void);
1390 # endif
1391 #else
1392 #define SymE_NeedsProto(vvv) SymI_NeedsProto(vvv);
1393 #define SymE_HasProto(vvv) SymI_HasProto(vvv)
1394 #endif
1395 #define SymI_HasProto(vvv) /**/
1396 #define SymI_HasProto_redirect(vvv,xxx) /**/
1397 RTS_SYMBOLS
1398 RTS_RET_SYMBOLS
1399 RTS_POSIX_ONLY_SYMBOLS
1400 RTS_MINGW_ONLY_SYMBOLS
1401 RTS_CYGWIN_ONLY_SYMBOLS
1402 RTS_DARWIN_ONLY_SYMBOLS
1403 RTS_LIBGCC_SYMBOLS
1404 RTS_LIBFFI_SYMBOLS
1405 #undef SymI_NeedsProto
1406 #undef SymI_HasProto
1407 #undef SymI_HasProto_redirect
1408 #undef SymE_HasProto
1409 #undef SymE_NeedsProto
1410
1411 #ifdef LEADING_UNDERSCORE
1412 #define MAYBE_LEADING_UNDERSCORE_STR(s) ("_" s)
1413 #else
1414 #define MAYBE_LEADING_UNDERSCORE_STR(s) (s)
1415 #endif
1416
1417 #define SymI_HasProto(vvv) { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1418 (void*)(&(vvv)) },
1419 #define SymE_HasProto(vvv) { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1420 (void*)DLL_IMPORT_DATA_REF(vvv) },
1421
1422 #define SymI_NeedsProto(vvv) SymI_HasProto(vvv)
1423 #define SymE_NeedsProto(vvv) SymE_HasProto(vvv)
1424
1425 // SymI_HasProto_redirect allows us to redirect references to one symbol to
1426 // another symbol. See newCAF/newDynCAF for an example.
1427 #define SymI_HasProto_redirect(vvv,xxx) \
1428 { MAYBE_LEADING_UNDERSCORE_STR(#vvv), \
1429 (void*)(&(xxx)) },
1430
1431 static RtsSymbolVal rtsSyms[] = {
1432 RTS_SYMBOLS
1433 RTS_RET_SYMBOLS
1434 RTS_POSIX_ONLY_SYMBOLS
1435 RTS_MINGW_ONLY_SYMBOLS
1436 RTS_CYGWIN_ONLY_SYMBOLS
1437 RTS_DARWIN_ONLY_SYMBOLS
1438 RTS_LIBGCC_SYMBOLS
1439 RTS_LIBFFI_SYMBOLS
1440 #if defined(darwin_HOST_OS) && defined(i386_HOST_ARCH)
1441 // dyld stub code contains references to this,
1442 // but it should never be called because we treat
1443 // lazy pointers as nonlazy.
1444 { "dyld_stub_binding_helper", (void*)0xDEADBEEF },
1445 #endif
1446 { 0, 0 } /* sentinel */
1447 };
1448
1449
1450 /* -----------------------------------------------------------------------------
1451 * Insert symbols into hash tables, checking for duplicates.
1452 */
1453
1454 static void ghciInsertStrHashTable ( pathchar* obj_name,
1455 HashTable *table,
1456 char* key,
1457 void *data
1458 )
1459 {
1460 if (lookupHashTable(table, (StgWord)key) == NULL)
1461 {
1462 insertStrHashTable(table, (StgWord)key, data);
1463 return;
1464 }
1465 debugBelch(
1466 "\n\n"
1467 "GHCi runtime linker: fatal error: I found a duplicate definition for symbol\n"
1468 " %s\n"
1469 "whilst processing object file\n"
1470 " %" PATH_FMT "\n"
1471 "This could be caused by:\n"
1472 " * Loading two different object files which export the same symbol\n"
1473 " * Specifying the same object file twice on the GHCi command line\n"
1474 " * An incorrect `package.conf' entry, causing some object to be\n"
1475 " loaded twice.\n"
1476 "GHCi cannot safely continue in this situation. Exiting now. Sorry.\n"
1477 "\n",
1478 (char*)key,
1479 obj_name
1480 );
1481 stg_exit(1);
1482 }
1483 /* -----------------------------------------------------------------------------
1484 * initialize the object linker
1485 */
1486
1487
1488 static int linker_init_done = 0 ;
1489
1490 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1491 static void *dl_prog_handle;
1492 static regex_t re_invalid;
1493 static regex_t re_realso;
1494 #ifdef THREADED_RTS
1495 static Mutex dl_mutex; // mutex to protect dlopen/dlerror critical section
1496 #endif
1497 #endif
1498
1499 void
1500 initLinker( void )
1501 {
1502 RtsSymbolVal *sym;
1503 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1504 int compileResult;
1505 #endif
1506
1507 IF_DEBUG(linker, debugBelch("initLinker: start\n"));
1508
1509 /* Make initLinker idempotent, so we can call it
1510 before every relevant operation; that means we
1511 don't need to initialise the linker separately */
1512 if (linker_init_done == 1) {
1513 IF_DEBUG(linker, debugBelch("initLinker: idempotent return\n"));
1514 return;
1515 } else {
1516 linker_init_done = 1;
1517 }
1518
1519 #if defined(THREADED_RTS) && (defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO))
1520 initMutex(&dl_mutex);
1521 #endif
1522 stablehash = allocStrHashTable();
1523 symhash = allocStrHashTable();
1524
1525 /* populate the symbol table with stuff from the RTS */
1526 for (sym = rtsSyms; sym->lbl != NULL; sym++) {
1527 ghciInsertStrHashTable(WSTR("(GHCi built-in symbols)"),
1528 symhash, sym->lbl, sym->addr);
1529 IF_DEBUG(linker, debugBelch("initLinker: inserting rts symbol %s, %p\n", sym->lbl, sym->addr));
1530 }
1531 # if defined(OBJFORMAT_MACHO) && defined(powerpc_HOST_ARCH)
1532 machoInitSymbolsWithoutUnderscore();
1533 # endif
1534
1535 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1536 # if defined(RTLD_DEFAULT)
1537 dl_prog_handle = RTLD_DEFAULT;
1538 # else
1539 dl_prog_handle = dlopen(NULL, RTLD_LAZY);
1540 # endif /* RTLD_DEFAULT */
1541
1542 compileResult = regcomp(&re_invalid,
1543 "(([^ \t()])+\\.so([^ \t:()])*):([ \t])*(invalid ELF header|file too short)",
1544 REG_EXTENDED);
1545 if (compileResult != 0) {
1546 barf("Compiling re_invalid failed");
1547 }
1548 compileResult = regcomp(&re_realso,
1549 "(GROUP|INPUT) *\\( *([^ )]+)",
1550 REG_EXTENDED);
1551 if (compileResult != 0) {
1552 barf("Compiling re_realso failed");
1553 }
1554 # endif
1555
1556 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
1557 if (RtsFlags.MiscFlags.linkerMemBase != 0) {
1558 // User-override for mmap_32bit_base
1559 mmap_32bit_base = (void*)RtsFlags.MiscFlags.linkerMemBase;
1560 }
1561 #endif
1562
1563 #if defined(mingw32_HOST_OS)
1564 /*
1565 * These two libraries cause problems when added to the static link,
1566 * but are necessary for resolving symbols in GHCi, hence we load
1567 * them manually here.
1568 */
1569 addDLL(WSTR("msvcrt"));
1570 addDLL(WSTR("kernel32"));
1571 #endif
1572
1573 IF_DEBUG(linker, debugBelch("initLinker: done\n"));
1574 return;
1575 }
1576
1577 void
1578 exitLinker( void ) {
1579 #if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1580 if (linker_init_done == 1) {
1581 regfree(&re_invalid);
1582 regfree(&re_realso);
1583 #ifdef THREADED_RTS
1584 closeMutex(&dl_mutex);
1585 #endif
1586 }
1587 #endif
1588 }
1589
1590 /* -----------------------------------------------------------------------------
1591 * Loading DLL or .so dynamic libraries
1592 * -----------------------------------------------------------------------------
1593 *
1594 * Add a DLL from which symbols may be found. In the ELF case, just
1595 * do RTLD_GLOBAL-style add, so no further messing around needs to
1596 * happen in order that symbols in the loaded .so are findable --
1597 * lookupSymbol() will subsequently see them by dlsym on the program's
1598 * dl-handle. Returns NULL if success, otherwise ptr to an err msg.
1599 *
1600 * In the PEi386 case, open the DLLs and put handles to them in a
1601 * linked list. When looking for a symbol, try all handles in the
1602 * list. This means that we need to load even DLLs that are guaranteed
1603 * to be in the ghc.exe image already, just so we can get a handle
1604 * to give to loadSymbol, so that we can find the symbols. For such
1605 * libraries, the LoadLibrary call should be a no-op except for returning
1606 * the handle.
1607 *
1608 */
1609
1610 #if defined(OBJFORMAT_PEi386)
1611 /* A record for storing handles into DLLs. */
1612
1613 typedef
1614 struct _OpenedDLL {
1615 pathchar* name;
1616 struct _OpenedDLL* next;
1617 HINSTANCE instance;
1618 }
1619 OpenedDLL;
1620
1621 /* A list thereof. */
1622 static OpenedDLL* opened_dlls = NULL;
1623 #endif
1624
1625 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1626
1627 /* Suppose in ghci we load a temporary SO for a module containing
1628 f = 1
1629 and then modify the module, recompile, and load another temporary
1630 SO with
1631 f = 2
1632 Then as we don't unload the first SO, dlsym will find the
1633 f = 1
1634 symbol whereas we want the
1635 f = 2
1636 symbol. We therefore need to keep our own SO handle list, and
1637 try SOs in the right order. */
1638
1639 typedef
1640 struct _OpenedSO {
1641 struct _OpenedSO* next;
1642 void *handle;
1643 }
1644 OpenedSO;
1645
1646 /* A list thereof. */
1647 static OpenedSO* openedSOs = NULL;
1648
1649 static const char *
1650 internal_dlopen(const char *dll_name)
1651 {
1652 OpenedSO* o_so;
1653 void *hdl;
1654 const char *errmsg;
1655 char *errmsg_copy;
1656
1657 // omitted: RTLD_NOW
1658 // see http://www.haskell.org/pipermail/cvs-ghc/2007-September/038570.html
1659 IF_DEBUG(linker,
1660 debugBelch("internal_dlopen: dll_name = '%s'\n", dll_name));
1661
1662 //-------------- Begin critical section ------------------
1663 // This critical section is necessary because dlerror() is not
1664 // required to be reentrant (see POSIX -- IEEE Std 1003.1-2008)
1665 // Also, the error message returned must be copied to preserve it
1666 // (see POSIX also)
1667
1668 ACQUIRE_LOCK(&dl_mutex);
1669 hdl = dlopen(dll_name, RTLD_LAZY | RTLD_GLOBAL);
1670
1671 errmsg = NULL;
1672 if (hdl == NULL) {
1673 /* dlopen failed; return a ptr to the error msg. */
1674 errmsg = dlerror();
1675 if (errmsg == NULL) errmsg = "addDLL: unknown error";
1676 errmsg_copy = stgMallocBytes(strlen(errmsg)+1, "addDLL");
1677 strcpy(errmsg_copy, errmsg);
1678 errmsg = errmsg_copy;
1679 }
1680 o_so = stgMallocBytes(sizeof(OpenedSO), "addDLL");
1681 o_so->handle = hdl;
1682 o_so->next = openedSOs;
1683 openedSOs = o_so;
1684
1685 RELEASE_LOCK(&dl_mutex);
1686 //--------------- End critical section -------------------
1687
1688 return errmsg;
1689 }
1690
1691 static void *
1692 internal_dlsym(void *hdl, const char *symbol) {
1693 OpenedSO* o_so;
1694 void *v;
1695
1696 // We acquire dl_mutex as concurrent dl* calls may alter dlerror
1697 ACQUIRE_LOCK(&dl_mutex);
1698 dlerror();
1699 for (o_so = openedSOs; o_so != NULL; o_so = o_so->next) {
1700 v = dlsym(o_so->handle, symbol);
1701 if (dlerror() == NULL) {
1702 RELEASE_LOCK(&dl_mutex);
1703 return v;
1704 }
1705 }
1706 v = dlsym(hdl, symbol)
1707 RELEASE_LOCK(&dl_mutex);
1708 return v;
1709 }
1710 # endif
1711
1712 const char *
1713 addDLL( pathchar *dll_name )
1714 {
1715 # if defined(OBJFORMAT_ELF) || defined(OBJFORMAT_MACHO)
1716 /* ------------------- ELF DLL loader ------------------- */
1717
1718 #define NMATCH 5
1719 regmatch_t match[NMATCH];
1720 const char *errmsg;
1721 FILE* fp;
1722 size_t match_length;
1723 #define MAXLINE 1000
1724 char line[MAXLINE];
1725 int result;
1726
1727 initLinker();
1728
1729 IF_DEBUG(linker, debugBelch("addDLL: dll_name = '%s'\n", dll_name));
1730 errmsg = internal_dlopen(dll_name);
1731
1732 if (errmsg == NULL) {
1733 return NULL;
1734 }
1735
1736 // GHC Trac ticket #2615
1737 // On some systems (e.g., Gentoo Linux) dynamic files (e.g. libc.so)
1738 // contain linker scripts rather than ELF-format object code. This
1739 // code handles the situation by recognizing the real object code
1740 // file name given in the linker script.
1741 //
1742 // If an "invalid ELF header" error occurs, it is assumed that the
1743 // .so file contains a linker script instead of ELF object code.
1744 // In this case, the code looks for the GROUP ( ... ) linker
1745 // directive. If one is found, the first file name inside the
1746 // parentheses is treated as the name of a dynamic library and the
1747 // code attempts to dlopen that file. If this is also unsuccessful,
1748 // an error message is returned.
1749
1750 // see if the error message is due to an invalid ELF header
1751 IF_DEBUG(linker, debugBelch("errmsg = '%s'\n", errmsg));
1752 result = regexec(&re_invalid, errmsg, (size_t) NMATCH, match, 0);
1753 IF_DEBUG(linker, debugBelch("result = %i\n", result));
1754 if (result == 0) {
1755 // success -- try to read the named file as a linker script
1756 match_length = (size_t) stg_min((match[1].rm_eo - match[1].rm_so),
1757 MAXLINE-1);
1758 strncpy(line, (errmsg+(match[1].rm_so)),match_length);
1759 line[match_length] = '\0'; // make sure string is null-terminated
1760 IF_DEBUG(linker, debugBelch ("file name = '%s'\n", line));
1761 if ((fp = fopen(line, "r")) == NULL) {
1762 return errmsg; // return original error if open fails
1763 }
1764 // try to find a GROUP or INPUT ( ... ) command
1765 while (fgets(line, MAXLINE, fp) != NULL) {
1766 IF_DEBUG(linker, debugBelch("input line = %s", line));
1767 if (regexec(&re_realso, line, (size_t) NMATCH, match, 0) == 0) {
1768 // success -- try to dlopen the first named file
1769 IF_DEBUG(linker, debugBelch("match%s\n",""));
1770 line[match[2].rm_eo] = '\0';
1771 errmsg = internal_dlopen(line+match[2].rm_so);
1772 break;
1773 }
1774 // if control reaches here, no GROUP or INPUT ( ... ) directive
1775 // was found and the original error message is returned to the
1776 // caller
1777 }
1778 fclose(fp);
1779 }
1780 return errmsg;
1781
1782 # elif defined(OBJFORMAT_PEi386)
1783 /* ------------------- Win32 DLL loader ------------------- */
1784
1785 pathchar* buf;
1786 OpenedDLL* o_dll;
1787 HINSTANCE instance;
1788
1789 initLinker();
1790
1791 /* debugBelch("\naddDLL; dll_name = `%s'\n", dll_name); */
1792
1793 /* See if we've already got it, and ignore if so. */
1794 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
1795 if (0 == pathcmp(o_dll->name, dll_name))
1796 return NULL;
1797 }
1798
1799 /* The file name has no suffix (yet) so that we can try
1800 both foo.dll and foo.drv
1801
1802 The documentation for LoadLibrary says:
1803 If no file name extension is specified in the lpFileName
1804 parameter, the default library extension .dll is
1805 appended. However, the file name string can include a trailing
1806 point character (.) to indicate that the module name has no
1807 extension. */
1808
1809 buf = stgMallocBytes((pathlen(dll_name) + 10) * sizeof(wchar_t), "addDLL");
1810 swprintf(buf, L"%s.DLL", dll_name);
1811 instance = LoadLibraryW(buf);
1812 if (instance == NULL) {
1813 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1814 // KAA: allow loading of drivers (like winspool.drv)
1815 swprintf(buf, L"%s.DRV", dll_name);
1816 instance = LoadLibraryW(buf);
1817 if (instance == NULL) {
1818 if (GetLastError() != ERROR_MOD_NOT_FOUND) goto error;
1819 // #1883: allow loading of unix-style libfoo.dll DLLs
1820 swprintf(buf, L"lib%s.DLL", dll_name);
1821 instance = LoadLibraryW(buf);
1822 if (instance == NULL) {
1823 goto error;
1824 }
1825 }
1826 }
1827 stgFree(buf);
1828
1829 /* Add this DLL to the list of DLLs in which to search for symbols. */
1830 o_dll = stgMallocBytes( sizeof(OpenedDLL), "addDLL" );
1831 o_dll->name = pathdup(dll_name);
1832 o_dll->instance = instance;
1833 o_dll->next = opened_dlls;
1834 opened_dlls = o_dll;
1835
1836 return NULL;
1837
1838 error:
1839 stgFree(buf);
1840 sysErrorBelch("%" PATH_FMT, dll_name);
1841
1842 /* LoadLibrary failed; return a ptr to the error msg. */
1843 return "addDLL: could not load DLL";
1844
1845 # else
1846 barf("addDLL: not implemented on this platform");
1847 # endif
1848 }
1849
1850 /* -----------------------------------------------------------------------------
1851 * insert a stable symbol in the hash table
1852 */
1853
1854 void
1855 insertStableSymbol(pathchar* obj_name, char* key, StgPtr p)
1856 {
1857 ghciInsertStrHashTable(obj_name, stablehash, key, getStablePtr(p));
1858 }
1859
1860
1861 /* -----------------------------------------------------------------------------
1862 * insert a symbol in the hash table
1863 */
1864 void
1865 insertSymbol(pathchar* obj_name, char* key, void* data)
1866 {
1867 ghciInsertStrHashTable(obj_name, symhash, key, data);
1868 }
1869
1870 /* -----------------------------------------------------------------------------
1871 * lookup a symbol in the hash table
1872 */
1873 void *
1874 lookupSymbol( char *lbl )
1875 {
1876 void *val;
1877 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s\n", lbl));
1878 initLinker() ;
1879 ASSERT(symhash != NULL);
1880 val = lookupStrHashTable(symhash, lbl);
1881
1882 if (val == NULL) {
1883 IF_DEBUG(linker, debugBelch("lookupSymbol: symbol not found\n"));
1884 # if defined(OBJFORMAT_ELF)
1885 return internal_dlsym(dl_prog_handle, lbl);
1886 # elif defined(OBJFORMAT_MACHO)
1887 # if HAVE_DLFCN_H
1888 /* On OS X 10.3 and later, we use dlsym instead of the old legacy
1889 interface.
1890
1891 HACK: On OS X, all symbols are prefixed with an underscore.
1892 However, dlsym wants us to omit the leading underscore from the
1893 symbol name -- the dlsym routine puts it back on before searching
1894 for the symbol. For now, we simply strip it off here (and ONLY
1895 here).
1896 */
1897 IF_DEBUG(linker, debugBelch("lookupSymbol: looking up %s with dlsym\n", lbl));
1898 ASSERT(lbl[0] == '_');
1899 return internal_dlsym(dl_prog_handle, lbl + 1);
1900 # else
1901 if (NSIsSymbolNameDefined(lbl)) {
1902 NSSymbol symbol = NSLookupAndBindSymbol(lbl);
1903 return NSAddressOfSymbol(symbol);
1904 } else {
1905 return NULL;
1906 }
1907 # endif /* HAVE_DLFCN_H */
1908 # elif defined(OBJFORMAT_PEi386)
1909 void* sym;
1910
1911 sym = lookupSymbolInDLLs((unsigned char*)lbl);
1912 if (sym != NULL) { return sym; };
1913
1914 // Also try looking up the symbol without the @N suffix. Some
1915 // DLLs have the suffixes on their symbols, some don't.
1916 zapTrailingAtSign ( (unsigned char*)lbl );
1917 sym = lookupSymbolInDLLs((unsigned char*)lbl);
1918 if (sym != NULL) { return sym; };
1919 return NULL;
1920
1921 # else
1922 ASSERT(2+2 == 5);
1923 return NULL;
1924 # endif
1925 } else {
1926 IF_DEBUG(linker, debugBelch("lookupSymbol: value of %s is %p\n", lbl, val));
1927 return val;
1928 }
1929 }
1930
1931 /* -----------------------------------------------------------------------------
1932 * Debugging aid: look in GHCi's object symbol tables for symbols
1933 * within DELTA bytes of the specified address, and show their names.
1934 */
1935 #ifdef DEBUG
1936 void ghci_enquire ( char* addr );
1937
1938 void ghci_enquire ( char* addr )
1939 {
1940 int i;
1941 char* sym;
1942 char* a;
1943 const int DELTA = 64;
1944 ObjectCode* oc;
1945
1946 initLinker();
1947
1948 for (oc = objects; oc; oc = oc->next) {
1949 for (i = 0; i < oc->n_symbols; i++) {
1950 sym = oc->symbols[i];
1951 if (sym == NULL) continue;
1952 a = NULL;
1953 if (a == NULL) {
1954 a = lookupStrHashTable(symhash, sym);
1955 }
1956 if (a == NULL) {
1957 // debugBelch("ghci_enquire: can't find %s\n", sym);
1958 }
1959 else if (addr-DELTA <= a && a <= addr+DELTA) {
1960 debugBelch("%p + %3d == `%s'\n", addr, (int)(a - addr), sym);
1961 }
1962 }
1963 }
1964 }
1965 #endif
1966
1967 #ifdef USE_MMAP
1968 #define ROUND_UP(x,size) ((x + size - 1) & ~(size - 1))
1969
1970 static void *
1971 mmapForLinker (size_t bytes, nat flags, int fd)
1972 {
1973 void *map_addr = NULL;
1974 void *result;
1975 int pagesize, size;
1976 static nat fixed = 0;
1977
1978 IF_DEBUG(linker, debugBelch("mmapForLinker: start\n"));
1979 pagesize = getpagesize();
1980 size = ROUND_UP(bytes, pagesize);
1981
1982 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
1983 mmap_again:
1984
1985 if (mmap_32bit_base != 0) {
1986 map_addr = mmap_32bit_base;
1987 }
1988 #endif
1989
1990 IF_DEBUG(linker, debugBelch("mmapForLinker: \tprotection %#0x\n", PROT_EXEC | PROT_READ | PROT_WRITE));
1991 IF_DEBUG(linker, debugBelch("mmapForLinker: \tflags %#0x\n", MAP_PRIVATE | TRY_MAP_32BIT | fixed | flags));
1992 result = mmap(map_addr, size, PROT_EXEC|PROT_READ|PROT_WRITE,
1993 MAP_PRIVATE|TRY_MAP_32BIT|fixed|flags, fd, 0);
1994
1995 if (result == MAP_FAILED) {
1996 sysErrorBelch("mmap %" FMT_Word " bytes at %p",(W_)size,map_addr);
1997 errorBelch("Try specifying an address with +RTS -xm<addr> -RTS");
1998 stg_exit(EXIT_FAILURE);
1999 }
2000
2001 #if !defined(ALWAYS_PIC) && defined(x86_64_HOST_ARCH)
2002 if (mmap_32bit_base != 0) {
2003 if (result == map_addr) {
2004 mmap_32bit_base = (StgWord8*)map_addr + size;
2005 } else {
2006 if ((W_)result > 0x80000000) {
2007 // oops, we were given memory over 2Gb
2008 #if defined(freebsd_HOST_OS) || defined(kfreebsdgnu_HOST_OS) || defined(dragonfly_HOST_OS)
2009 // Some platforms require MAP_FIXED. This is normally
2010 // a bad idea, because MAP_FIXED will overwrite
2011 // existing mappings.
2012 munmap(result,size);
2013 fixed = MAP_FIXED;
2014 goto mmap_again;
2015 #else
2016 barf("loadObj: failed to mmap() memory below 2Gb; asked for %lu bytes at %p. Try specifying an address with +RTS -xm<addr> -RTS", size, map_addr, result);
2017 #endif
2018 } else {
2019 // hmm, we were given memory somewhere else, but it's
2020 // still under 2Gb so we can use it. Next time, ask
2021 // for memory right after the place we just got some
2022 mmap_32bit_base = (StgWord8*)result + size;
2023 }
2024 }
2025 } else {
2026 if ((W_)result > 0x80000000) {
2027 // oops, we were given memory over 2Gb
2028 // ... try allocating memory somewhere else?;
2029 debugTrace(DEBUG_linker,"MAP_32BIT didn't work; gave us %lu bytes at 0x%p", bytes, result);
2030 munmap(result, size);
2031
2032 // Set a base address and try again... (guess: 1Gb)
2033 mmap_32bit_base = (void*)0x40000000;
2034 goto mmap_again;
2035 }
2036 }
2037 #endif
2038
2039 IF_DEBUG(linker, debugBelch("mmapForLinker: mapped %" FMT_Word " bytes starting at %p\n", (W_)size, result));
2040 IF_DEBUG(linker, debugBelch("mmapForLinker: done\n"));
2041 return result;
2042 }
2043 #endif // USE_MMAP
2044
2045 static ObjectCode*
2046 mkOc( pathchar *path, char *image, int imageSize,
2047 char *archiveMemberName
2048 #ifndef USE_MMAP
2049 #ifdef darwin_HOST_OS
2050 , int misalignment
2051 #endif
2052 #endif
2053 ) {
2054 ObjectCode* oc;
2055
2056 IF_DEBUG(linker, debugBelch("mkOc: start\n"));
2057 oc = stgMallocBytes(sizeof(ObjectCode), "loadArchive(oc)");
2058
2059 # if defined(OBJFORMAT_ELF)
2060 oc->formatName = "ELF";
2061 # elif defined(OBJFORMAT_PEi386)
2062 oc->formatName = "PEi386";
2063 # elif defined(OBJFORMAT_MACHO)
2064 oc->formatName = "Mach-O";
2065 # else
2066 stgFree(oc);
2067 barf("loadObj: not implemented on this platform");
2068 # endif
2069
2070 oc->image = image;
2071 oc->fileName = pathdup(path);
2072
2073 if (archiveMemberName) {
2074 oc->archiveMemberName = stgMallocBytes( strlen(archiveMemberName)+1, "loadObj" );
2075 strcpy(oc->archiveMemberName, archiveMemberName);
2076 }
2077 else {
2078 oc->archiveMemberName = NULL;
2079 }
2080
2081 oc->fileSize = imageSize;
2082 oc->symbols = NULL;
2083 oc->sections = NULL;
2084 oc->proddables = NULL;
2085
2086 #ifndef USE_MMAP
2087 #ifdef darwin_HOST_OS
2088 oc->misalignment = misalignment;
2089 #endif
2090 #endif
2091
2092 /* chain it onto the list of objects */
2093 oc->next = objects;
2094 objects = oc;
2095
2096 IF_DEBUG(linker, debugBelch("mkOc: done\n"));
2097 return oc;
2098 }
2099
2100 HsInt
2101 loadArchive( pathchar *path )
2102 {
2103 ObjectCode* oc;
2104 char *image;
2105 int memberSize;
2106 FILE *f;
2107 int n;
2108 size_t thisFileNameSize;
2109 char *fileName;
2110 size_t fileNameSize;
2111 int isObject, isGnuIndex;
2112 char tmp[20];
2113 char *gnuFileIndex;
2114 int gnuFileIndexSize;
2115 #if defined(darwin_HOST_OS)
2116 int i;
2117 uint32_t nfat_arch, nfat_offset, cputype, cpusubtype;
2118 #if defined(i386_HOST_ARCH)
2119 const uint32_t mycputype = CPU_TYPE_X86;
2120 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_ALL;
2121 #elif defined(x86_64_HOST_ARCH)
2122 const uint32_t mycputype = CPU_TYPE_X86_64;
2123 const uint32_t mycpusubtype = CPU_SUBTYPE_X86_64_ALL;
2124 #elif defined(powerpc_HOST_ARCH)
2125 const uint32_t mycputype = CPU_TYPE_POWERPC;
2126 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2127 #elif defined(powerpc64_HOST_ARCH)
2128 const uint32_t mycputype = CPU_TYPE_POWERPC64;
2129 const uint32_t mycpusubtype = CPU_SUBTYPE_POWERPC_ALL;
2130 #else
2131 #error Unknown Darwin architecture
2132 #endif
2133 #if !defined(USE_MMAP)
2134 int misalignment;
2135 #endif
2136 #endif
2137
2138 IF_DEBUG(linker, debugBelch("loadArchive: start\n"));
2139 IF_DEBUG(linker, debugBelch("loadArchive: Loading archive `%" PATH_FMT" '\n", path));
2140
2141 if (dynamicGhcPrograms) {
2142 barf("loadArchive called, but using dynamic GHC (%s)", path);
2143 }
2144
2145 gnuFileIndex = NULL;
2146 gnuFileIndexSize = 0;
2147
2148 fileNameSize = 32;
2149 fileName = stgMallocBytes(fileNameSize, "loadArchive(fileName)");
2150
2151 f = pathopen(path, WSTR("rb"));
2152 if (!f)
2153 barf("loadObj: can't read `%s'", path);
2154
2155 /* Check if this is an archive by looking for the magic "!<arch>\n"
2156 * string. Usually, if this fails, we barf and quit. On Darwin however,
2157 * we may have a fat archive, which contains archives for more than
2158 * one architecture. Fat archives start with the magic number 0xcafebabe,
2159 * always stored big endian. If we find a fat_header, we scan through
2160 * the fat_arch structs, searching through for one for our host
2161 * architecture. If a matching struct is found, we read the offset
2162 * of our archive data (nfat_offset) and seek forward nfat_offset bytes
2163 * from the start of the file.
2164 *
2165 * A subtlety is that all of the members of the fat_header and fat_arch
2166 * structs are stored big endian, so we need to call byte order
2167 * conversion functions.
2168 *
2169 * If we find the appropriate architecture in a fat archive, we gobble
2170 * its magic "!<arch>\n" string and continue processing just as if
2171 * we had a single architecture archive.
2172 */
2173
2174 n = fread ( tmp, 1, 8, f );
2175 if (n != 8)
2176 barf("loadArchive: Failed reading header from `%s'", path);
2177 if (strncmp(tmp, "!<arch>\n", 8) != 0) {
2178
2179 #if defined(darwin_HOST_OS)
2180 /* Not a standard archive, look for a fat archive magic number: */
2181 if (ntohl(*(uint32_t *)tmp) == FAT_MAGIC) {
2182 nfat_arch = ntohl(*(uint32_t *)(tmp + 4));
2183 IF_DEBUG(linker, debugBelch("loadArchive: found a fat archive containing %d architectures\n", nfat_arch));
2184 nfat_offset = 0;
2185
2186 for (i = 0; i < (int)nfat_arch; i++) {
2187 /* search for the right arch */
2188 n = fread( tmp, 1, 20, f );
2189 if (n != 8)
2190 barf("loadArchive: Failed reading arch from `%s'", path);
2191 cputype = ntohl(*(uint32_t *)tmp);
2192 cpusubtype = ntohl(*(uint32_t *)(tmp + 4));
2193
2194 if (cputype == mycputype && cpusubtype == mycpusubtype) {
2195 IF_DEBUG(linker, debugBelch("loadArchive: found my archive in a fat archive\n"));
2196 nfat_offset = ntohl(*(uint32_t *)(tmp + 8));
2197 break;
2198 }
2199 }
2200
2201 if (nfat_offset == 0) {
2202 barf ("loadArchive: searched %d architectures, but no host arch found", (int)nfat_arch);
2203 }
2204 else {
2205 n = fseek( f, nfat_offset, SEEK_SET );
2206 if (n != 0)
2207 barf("loadArchive: Failed to seek to arch in `%s'", path);
2208 n = fread ( tmp, 1, 8, f );
2209 if (n != 8)
2210 barf("loadArchive: Failed reading header from `%s'", path);
2211 if (strncmp(tmp, "!<arch>\n", 8) != 0) {
2212 barf("loadArchive: couldn't find archive in `%s' at offset %d", path, nfat_offset);
2213 }
2214 }
2215 }
2216 else {
2217 barf("loadArchive: Neither an archive, nor a fat archive: `%s'", path);
2218 }
2219
2220 #else
2221 barf("loadArchive: Not an archive: `%s'", path);
2222 #endif
2223 }
2224
2225 IF_DEBUG(linker, debugBelch("loadArchive: loading archive contents\n"));
2226
2227 while(1) {
2228 n = fread ( fileName, 1, 16, f );
2229 if (n != 16) {
2230 if (feof(f)) {
2231 IF_DEBUG(linker, debugBelch("loadArchive: EOF while reading from '%" PATH_FMT "'\n", path));
2232 break;
2233 }
2234 else {
2235 barf("loadArchive: Failed reading file name from `%s'", path);
2236 }
2237 }
2238
2239 #if defined(darwin_HOST_OS)
2240 if (strncmp(fileName, "!<arch>\n", 8) == 0) {
2241 IF_DEBUG(linker, debugBelch("loadArchive: found the start of another archive, breaking\n"));
2242 break;
2243 }
2244 #endif
2245
2246 n = fread ( tmp, 1, 12, f );
2247 if (n != 12)
2248 barf("loadArchive: Failed reading mod time from `%s'", path);
2249 n = fread ( tmp, 1, 6, f );
2250 if (n != 6)
2251 barf("loadArchive: Failed reading owner from `%s'", path);
2252 n = fread ( tmp, 1, 6, f );
2253 if (n != 6)
2254 barf("loadArchive: Failed reading group from `%s'", path);
2255 n = fread ( tmp, 1, 8, f );
2256 if (n != 8)
2257 barf("loadArchive: Failed reading mode from `%s'", path);
2258 n = fread ( tmp, 1, 10, f );
2259 if (n != 10)
2260 barf("loadArchive: Failed reading size from `%s'", path);
2261 tmp[10] = '\0';
2262 for (n = 0; isdigit(tmp[n]); n++);
2263 tmp[n] = '\0';
2264 memberSize = atoi(tmp);
2265
2266 IF_DEBUG(linker, debugBelch("loadArchive: size of this archive member is %d\n", memberSize));
2267 n = fread ( tmp, 1, 2, f );
2268 if (n != 2)
2269 barf("loadArchive: Failed reading magic from `%s'", path);
2270 if (strncmp(tmp, "\x60\x0A", 2) != 0)
2271 barf("loadArchive: Failed reading magic from `%s' at %ld. Got %c%c",
2272 path, ftell(f), tmp[0], tmp[1]);
2273
2274 isGnuIndex = 0;
2275 /* Check for BSD-variant large filenames */
2276 if (0 == strncmp(fileName, "#1/", 3)) {
2277 fileName[16] = '\0';
2278 if (isdigit(fileName[3])) {
2279 for (n = 4; isdigit(fileName[n]); n++);
2280 fileName[n] = '\0';
2281 thisFileNameSize = atoi(fileName + 3);
2282 memberSize -= thisFileNameSize;
2283 if (thisFileNameSize >= fileNameSize) {
2284 /* Double it to avoid potentially continually
2285 increasing it by 1 */
2286 fileNameSize = thisFileNameSize * 2;
2287 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2288 }
2289 n = fread ( fileName, 1, thisFileNameSize, f );
2290 if (n != (int)thisFileNameSize) {
2291 barf("loadArchive: Failed reading filename from `%s'",
2292 path);
2293 }
2294 fileName[thisFileNameSize] = 0;
2295
2296 /* On OS X at least, thisFileNameSize is the size of the
2297 fileName field, not the length of the fileName
2298 itself. */
2299 thisFileNameSize = strlen(fileName);
2300 }
2301 else {
2302 barf("loadArchive: BSD-variant filename size not found while reading filename from `%s'", path);
2303 }
2304 }
2305 /* Check for GNU file index file */
2306 else if (0 == strncmp(fileName, "//", 2)) {
2307 fileName[0] = '\0';
2308 thisFileNameSize = 0;
2309 isGnuIndex = 1;
2310 }
2311 /* Check for a file in the GNU file index */
2312 else if (fileName[0] == '/') {
2313 if (isdigit(fileName[1])) {
2314 int i;
2315
2316 for (n = 2; isdigit(fileName[n]); n++);
2317 fileName[n] = '\0';
2318 n = atoi(fileName + 1);
2319
2320 if (gnuFileIndex == NULL) {
2321 barf("loadArchive: GNU-variant filename without an index while reading from `%s'", path);
2322 }
2323 if (n < 0 || n > gnuFileIndexSize) {
2324 barf("loadArchive: GNU-variant filename offset %d out of range [0..%d] while reading filename from `%s'", n, gnuFileIndexSize, path);
2325 }
2326 if (n != 0 && gnuFileIndex[n - 1] != '\n') {
2327 barf("loadArchive: GNU-variant filename offset %d invalid (range [0..%d]) while reading filename from `%s'", n, gnuFileIndexSize, path);
2328 }
2329 for (i = n; gnuFileIndex[i] != '/'; i++);
2330 thisFileNameSize = i - n;
2331 if (thisFileNameSize >= fileNameSize) {
2332 /* Double it to avoid potentially continually
2333 increasing it by 1 */
2334 fileNameSize = thisFileNameSize * 2;
2335 fileName = stgReallocBytes(fileName, fileNameSize, "loadArchive(fileName)");
2336 }
2337 memcpy(fileName, gnuFileIndex + n, thisFileNameSize);
2338 fileName[thisFileNameSize] = '\0';
2339 }
2340 else if (fileName[1] == ' ') {
2341 fileName[0] = '\0';
2342 thisFileNameSize = 0;
2343 }
2344 else {
2345 barf("loadArchive: GNU-variant filename offset not found while reading filename from `%s'", path);
2346 }
2347 }
2348 /* Finally, the case where the filename field actually contains
2349 the filename */
2350 else {
2351 /* GNU ar terminates filenames with a '/', this allowing
2352 spaces in filenames. So first look to see if there is a
2353 terminating '/'. */
2354 for (thisFileNameSize = 0;
2355 thisFileNameSize < 16;
2356 thisFileNameSize++) {
2357 if (fileName[thisFileNameSize] == '/') {
2358 fileName[thisFileNameSize] = '\0';
2359 break;
2360 }
2361 }
2362 /* If we didn't find a '/', then a space teminates the
2363 filename. Note that if we don't find one, then
2364 thisFileNameSize ends up as 16, and we already have the
2365 '\0' at the end. */
2366 if (thisFileNameSize == 16) {
2367 for (thisFileNameSize = 0;
2368 thisFileNameSize < 16;
2369 thisFileNameSize++) {
2370 if (fileName[thisFileNameSize] == ' ') {
2371 fileName[thisFileNameSize] = '\0';
2372 break;
2373 }
2374 }
2375 }
2376 }
2377
2378 IF_DEBUG(linker,
2379 debugBelch("loadArchive: Found member file `%s'\n", fileName));
2380
2381 isObject = thisFileNameSize >= 2
2382 && fileName[thisFileNameSize - 2] == '.'
2383 && fileName[thisFileNameSize - 1] == 'o';
2384
2385 IF_DEBUG(linker, debugBelch("loadArchive: \tthisFileNameSize = %d\n", (int)thisFileNameSize));
2386 IF_DEBUG(linker, debugBelch("loadArchive: \tisObject = %d\n", isObject));
2387
2388 if (isObject) {
2389 char *archiveMemberName;
2390
2391 IF_DEBUG(linker, debugBelch("loadArchive: Member is an object file...loading...\n"));
2392
2393 /* We can't mmap from the archive directly, as object
2394 files need to be 8-byte aligned but files in .ar
2395 archives are 2-byte aligned. When possible we use mmap
2396 to get some anonymous memory, as on 64-bit platforms if
2397 we use malloc then we can be given memory above 2^32.
2398 In the mmap case we're probably wasting lots of space;
2399 we could do better. */
2400 #if defined(USE_MMAP)
2401 image = mmapForLinker(memberSize, MAP_ANONYMOUS, -1);
2402 #elif defined(mingw32_HOST_OS)
2403 // TODO: We would like to use allocateExec here, but allocateExec
2404 // cannot currently allocate blocks large enough.
2405 {
2406 int offset;
2407 #if defined(x86_64_HOST_ARCH)
2408 /* We get back 8-byte aligned memory (is that guaranteed?), but
2409 the offsets to the sections within the file are all 4 mod 8
2410 (is that guaranteed?). We therefore need to offset the image
2411 by 4, so that all the pointers are 8-byte aligned, so that
2412 pointer tagging works. */
2413 offset = 4;
2414 #else
2415 offset = 0;
2416 #endif
2417 image = VirtualAlloc(NULL, memberSize + offset,
2418 MEM_RESERVE | MEM_COMMIT,
2419 PAGE_EXECUTE_READWRITE);
2420 image += offset;
2421 }
2422 #elif defined(darwin_HOST_OS)
2423 /* See loadObj() */
2424 misalignment = machoGetMisalignment(f);
2425 image = stgMallocBytes(memberSize + misalignment, "loadArchive(image)");
2426 image += misalignment;
2427 #else
2428 image = stgMallocBytes(memberSize, "loadArchive(image)");
2429 #endif
2430 n = fread ( image, 1, memberSize, f );
2431 if (n != memberSize) {
2432 barf("loadArchive: error whilst reading `%s'", path);
2433 }
2434
2435 archiveMemberName = stgMallocBytes(pathlen(path) + thisFileNameSize + 3,
2436 "loadArchive(file)");
2437 sprintf(archiveMemberName, "%" PATH_FMT "(%.*s)",
2438 path, (int)thisFileNameSize, fileName);
2439
2440 oc = mkOc(path, image, memberSize, archiveMemberName
2441 #ifndef USE_MMAP
2442 #ifdef darwin_HOST_OS
2443 , misalignment
2444 #endif
2445 #endif
2446 );
2447
2448 stgFree(archiveMemberName);
2449
2450 if (0 == loadOc(oc)) {
2451 stgFree(fileName);
2452 return 0;
2453 }
2454 }
2455 else if (isGnuIndex) {
2456 if (gnuFileIndex != NULL) {
2457 barf("loadArchive: GNU-variant index found, but already have an index, while reading filename from `%s'", path);
2458 }
2459 IF_DEBUG(linker, debugBelch("loadArchive: Found GNU-variant file index\n"));
2460 #ifdef USE_MMAP
2461 gnuFileIndex = mmapForLinker(memberSize + 1, MAP_ANONYMOUS, -1);
2462 #else
2463 gnuFileIndex = stgMallocBytes(memberSize + 1, "loadArchive(image)");
2464 #endif
2465 n = fread ( gnuFileIndex, 1, memberSize, f );
2466 if (n != memberSize) {
2467 barf("loadArchive: error whilst reading `%s'", path);
2468 }
2469 gnuFileIndex[memberSize] = '/';
2470 gnuFileIndexSize = memberSize;
2471 }
2472 else {
2473 IF_DEBUG(linker, debugBelch("loadArchive: '%s' does not appear to be an object file\n", fileName));
2474 n = fseek(f, memberSize, SEEK_CUR);
2475 if (n != 0)
2476 barf("loadArchive: error whilst seeking by %d in `%s'",
2477 memberSize, path);
2478 }
2479
2480 /* .ar files are 2-byte aligned */
2481 if (memberSize % 2) {
2482 IF_DEBUG(linker, debugBelch("loadArchive: trying to read one pad byte\n"));
2483 n = fread ( tmp, 1, 1, f );
2484 if (n != 1) {
2485 if (feof(f)) {
2486 IF_DEBUG(linker, debugBelch("loadArchive: found EOF while reading one pad byte\n"));
2487 break;
2488 }
2489 else {
2490 barf("loadArchive: Failed reading padding from `%s'", path);
2491 }
2492 }
2493 IF_DEBUG(linker, debugBelch("loadArchive: successfully read one pad byte\n"));
2494 }
2495 IF_DEBUG(linker, debugBelch("loadArchive: reached end of archive loading while loop\n"));
2496 }
2497
2498 fclose(f);
2499
2500 stgFree(fileName);
2501 if (gnuFileIndex != NULL) {
2502 #ifdef USE_MMAP
2503 munmap(gnuFileIndex, gnuFileIndexSize + 1);
2504 #else
2505 stgFree(gnuFileIndex);
2506 #endif
2507 }
2508
2509 IF_DEBUG(linker, debugBelch("loadArchive: done\n"));
2510 return 1;
2511 }
2512
2513 /* -----------------------------------------------------------------------------
2514 * Load an obj (populate the global symbol table, but don't resolve yet)
2515 *
2516 * Returns: 1 if ok, 0 on error.
2517 */
2518 HsInt
2519 loadObj( pathchar *path )
2520 {
2521 ObjectCode* oc;
2522 char *image;
2523 int fileSize;
2524 struct_stat st;
2525 int r;
2526 #ifdef USE_MMAP
2527 int fd;
2528 #else
2529 FILE *f;
2530 # if defined(darwin_HOST_OS)
2531 int misalignment;
2532 # endif
2533 #endif
2534 IF_DEBUG(linker, debugBelch("loadObj %" PATH_FMT "\n", path));
2535
2536 if (dynamicGhcPrograms) {
2537 barf("loadObj called, but using dynamic GHC (%s)", path);
2538 }
2539
2540 initLinker();
2541
2542 /* debugBelch("loadObj %s\n", path ); */
2543
2544 /* Check that we haven't already loaded this object.
2545 Ignore requests to load multiple times */
2546 {
2547 ObjectCode *o;
2548 int is_dup = 0;
2549 for (o = objects; o; o = o->next) {
2550 if (0 == pathcmp(o->fileName, path)) {
2551 is_dup = 1;
2552 break; /* don't need to search further */
2553 }
2554 }
2555 if (is_dup) {
2556 IF_DEBUG(linker, debugBelch(
2557 "GHCi runtime linker: warning: looks like you're trying to load the\n"
2558 "same object file twice:\n"
2559 " %" PATH_FMT "\n"
2560 "GHCi will ignore this, but be warned.\n"
2561 , path));
2562 return 1; /* success */
2563 }
2564 }
2565
2566 r = pathstat(path, &st);
2567 if (r == -1) {
2568 IF_DEBUG(linker, debugBelch("File doesn't exist\n"));
2569 return 0;
2570 }
2571
2572 fileSize = st.st_size;
2573
2574 #ifdef USE_MMAP
2575 /* On many architectures malloc'd memory isn't executable, so we need to use mmap. */
2576
2577 #if defined(openbsd_HOST_OS)
2578 fd = open(path, O_RDONLY, S_IRUSR);
2579 #else
2580 fd = open(path, O_RDONLY);
2581 #endif
2582 if (fd == -1)
2583 barf("loadObj: can't open `%s'", path);
2584
2585 image = mmapForLinker(fileSize, 0, fd);
2586
2587 close(fd);
2588
2589 #else /* !USE_MMAP */
2590 /* load the image into memory */
2591 f = pathopen(path, WSTR("rb"));
2592 if (!f)
2593 barf("loadObj: can't read `%" PATH_FMT "'", path);
2594
2595 # if defined(mingw32_HOST_OS)
2596 // TODO: We would like to use allocateExec here, but allocateExec
2597 // cannot currently allocate blocks large enough.
2598 {
2599 int offset;
2600 #if defined(x86_64_HOST_ARCH)
2601 /* We get back 8-byte aligned memory (is that guaranteed?), but
2602 the offsets to the sections within the file are all 4 mod 8
2603 (is that guaranteed?). We therefore need to offset the image
2604 by 4, so that all the pointers are 8-byte aligned, so that
2605 pointer tagging works. */
2606 offset = 4;
2607 #else
2608 offset = 0;
2609 #endif
2610 image = VirtualAlloc(NULL, fileSize + offset, MEM_RESERVE | MEM_COMMIT,
2611 PAGE_EXECUTE_READWRITE);
2612 image += offset;
2613 }
2614 # elif defined(darwin_HOST_OS)
2615 // In a Mach-O .o file, all sections can and will be misaligned
2616 // if the total size of the headers is not a multiple of the
2617 // desired alignment. This is fine for .o files that only serve
2618 // as input for the static linker, but it's not fine for us,
2619 // as SSE (used by gcc for floating point) and Altivec require
2620 // 16-byte alignment.
2621 // We calculate the correct alignment from the header before
2622 // reading the file, and then we misalign image on purpose so
2623 // that the actual sections end up aligned again.
2624 misalignment = machoGetMisalignment(f);
2625 image = stgMallocBytes(fileSize + misalignment, "loadObj(image)");
2626 image += misalignment;
2627 # else
2628 image = stgMallocBytes(fileSize, "loadObj(image)");
2629 # endif
2630
2631 {
2632 int n;
2633 n = fread ( image, 1, fileSize, f );
2634 if (n != fileSize)
2635 barf("loadObj: error whilst reading `%s'", path);
2636 }
2637 fclose(f);
2638 #endif /* USE_MMAP */
2639
2640 oc = mkOc(path, image, fileSize, NULL
2641 #ifndef USE_MMAP
2642 #ifdef darwin_HOST_OS
2643 , misalignment
2644 #endif
2645 #endif
2646 );
2647
2648 return loadOc(oc);
2649 }
2650
2651 static HsInt
2652 loadOc( ObjectCode* oc ) {
2653 int r;
2654
2655 IF_DEBUG(linker, debugBelch("loadOc: start\n"));
2656
2657 # if defined(OBJFORMAT_MACHO) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH))
2658 r = ocAllocateSymbolExtras_MachO ( oc );
2659 if (!r) {
2660 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_MachO failed\n"));
2661 return r;
2662 }
2663 # elif defined(OBJFORMAT_ELF) && (defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH))
2664 r = ocAllocateSymbolExtras_ELF ( oc );
2665 if (!r) {
2666 IF_DEBUG(linker, debugBelch("loadOc: ocAllocateSymbolExtras_ELF failed\n"));
2667 return r;
2668 }
2669 #endif
2670
2671 /* verify the in-memory image */
2672 # if defined(OBJFORMAT_ELF)
2673 r = ocVerifyImage_ELF ( oc );
2674 # elif defined(OBJFORMAT_PEi386)
2675 r = ocVerifyImage_PEi386 ( oc );
2676 # elif defined(OBJFORMAT_MACHO)
2677 r = ocVerifyImage_MachO ( oc );
2678 # else
2679 barf("loadObj: no verify method");
2680 # endif
2681 if (!r) {
2682 IF_DEBUG(linker, debugBelch("loadOc: ocVerifyImage_* failed\n"));
2683 return r;
2684 }
2685
2686 /* build the symbol list for this image */
2687 # if defined(OBJFORMAT_ELF)
2688 r = ocGetNames_ELF ( oc );
2689 # elif defined(OBJFORMAT_PEi386)
2690 r = ocGetNames_PEi386 ( oc );
2691 # elif defined(OBJFORMAT_MACHO)
2692 r = ocGetNames_MachO ( oc );
2693 # else
2694 barf("loadObj: no getNames method");
2695 # endif
2696 if (!r) {
2697 IF_DEBUG(linker, debugBelch("loadOc: ocGetNames_* failed\n"));
2698 return r;
2699 }
2700
2701 /* loaded, but not resolved yet */
2702 oc->status = OBJECT_LOADED;
2703 IF_DEBUG(linker, debugBelch("loadOc: done.\n"));
2704
2705 return 1;
2706 }
2707
2708 /* -----------------------------------------------------------------------------
2709 * resolve all the currently unlinked objects in memory
2710 *
2711 * Returns: 1 if ok, 0 on error.
2712 */
2713 HsInt
2714 resolveObjs( void )
2715 {
2716 ObjectCode *oc;
2717 int r;
2718
2719 IF_DEBUG(linker, debugBelch("resolveObjs: start\n"));
2720 initLinker();
2721
2722 for (oc = objects; oc; oc = oc->next) {
2723 if (oc->status != OBJECT_RESOLVED) {
2724 # if defined(OBJFORMAT_ELF)
2725 r = ocResolve_ELF ( oc );
2726 # elif defined(OBJFORMAT_PEi386)
2727 r = ocResolve_PEi386 ( oc );
2728 # elif defined(OBJFORMAT_MACHO)
2729 r = ocResolve_MachO ( oc );
2730 # else
2731 barf("resolveObjs: not implemented on this platform");
2732 # endif
2733 if (!r) { return r; }
2734 oc->status = OBJECT_RESOLVED;
2735 }
2736 }
2737 IF_DEBUG(linker, debugBelch("resolveObjs: done\n"));
2738 return 1;
2739 }
2740
2741 /* -----------------------------------------------------------------------------
2742 * delete an object from the pool
2743 */
2744 HsInt
2745 unloadObj( pathchar *path )
2746 {
2747 ObjectCode *oc, *prev;
2748 HsBool unloadedAnyObj = HS_BOOL_FALSE;
2749
2750 ASSERT(symhash != NULL);
2751 ASSERT(objects != NULL);
2752
2753 initLinker();
2754
2755 prev = NULL;
2756 for (oc = objects; oc; prev = oc, oc = oc->next) {
2757 if (!pathcmp(oc->fileName,path)) {
2758
2759 /* Remove all the mappings for the symbols within this
2760 * object..
2761 */
2762 {
2763 int i;
2764 for (i = 0; i < oc->n_symbols; i++) {
2765 if (oc->symbols[i] != NULL) {
2766 removeStrHashTable(symhash, oc->symbols[i], NULL);
2767 }
2768 }
2769 }
2770
2771 if (prev == NULL) {
2772 objects = oc->next;
2773 } else {
2774 prev->next = oc->next;
2775 }
2776
2777 // We're going to leave this in place, in case there are
2778 // any pointers from the heap into it:
2779 // #ifdef mingw32_HOST_OS
2780 // If uncommenting, note that currently oc->image is
2781 // not the right address to free on Win64, as we added
2782 // 4 bytes of padding at the start
2783 // VirtualFree(oc->image);
2784 // #else
2785 // stgFree(oc->image);
2786 // #endif
2787 stgFree(oc->fileName);
2788 stgFree(oc->archiveMemberName);
2789 stgFree(oc->symbols);
2790 stgFree(oc->sections);
2791 stgFree(oc);
2792
2793 /* This could be a member of an archive so continue
2794 * unloading other members. */
2795 unloadedAnyObj = HS_BOOL_TRUE;
2796 }
2797 }
2798
2799 if (unloadedAnyObj) {
2800 return 1;
2801 }
2802 else {
2803 errorBelch("unloadObj: can't find `%" PATH_FMT "' to unload", path);
2804 return 0;
2805 }
2806 }
2807
2808 /* -----------------------------------------------------------------------------
2809 * Sanity checking. For each ObjectCode, maintain a list of address ranges
2810 * which may be prodded during relocation, and abort if we try and write
2811 * outside any of these.
2812 */
2813 static void
2814 addProddableBlock ( ObjectCode* oc, void* start, int size )
2815 {
2816 ProddableBlock* pb
2817 = stgMallocBytes(sizeof(ProddableBlock), "addProddableBlock");
2818
2819 IF_DEBUG(linker, debugBelch("addProddableBlock: %p %p %d\n", oc, start, size));
2820 ASSERT(size > 0);
2821 pb->start = start;
2822 pb->size = size;
2823 pb->next = oc->proddables;
2824 oc->proddables = pb;
2825 }
2826
2827 static void
2828 checkProddableBlock (ObjectCode *oc, void *addr, size_t size )
2829 {
2830 ProddableBlock* pb;
2831
2832 for (pb = oc->proddables; pb != NULL; pb = pb->next) {
2833 char* s = (char*)(pb->start);
2834 char* e = s + pb->size;
2835 char* a = (char*)addr;
2836 if (a >= s && (a+size) <= e) return;
2837 }
2838 barf("checkProddableBlock: invalid fixup in runtime linker: %p", addr);
2839 }
2840
2841 /* -----------------------------------------------------------------------------
2842 * Section management.
2843 */
2844 static void
2845 addSection ( ObjectCode* oc, SectionKind kind,
2846 void* start, void* end )
2847 {
2848 Section* s = stgMallocBytes(sizeof(Section), "addSection");
2849 s->start = start;
2850 s->end = end;
2851 s->kind = kind;
2852 s->next = oc->sections;
2853 oc->sections = s;
2854
2855 IF_DEBUG(linker, debugBelch("addSection: %p-%p (size %lld), kind %d\n",
2856 start, ((char*)end)-1, ((long long)(size_t)end) - ((long long)(size_t)start) + 1, kind ));
2857 }
2858
2859
2860 /* --------------------------------------------------------------------------
2861 * Symbol Extras.
2862 * This is about allocating a small chunk of memory for every symbol in the
2863 * object file. We make sure that the SymboLExtras are always "in range" of
2864 * limited-range PC-relative instructions on various platforms by allocating
2865 * them right next to the object code itself.
2866 */
2867
2868 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2869 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2870
2871 /*
2872 ocAllocateSymbolExtras
2873
2874 Allocate additional space at the end of the object file image to make room
2875 for jump islands (powerpc, x86_64, arm) and GOT entries (x86_64).
2876
2877 PowerPC relative branch instructions have a 24 bit displacement field.
2878 As PPC code is always 4-byte-aligned, this yields a +-32MB range.
2879 If a particular imported symbol is outside this range, we have to redirect
2880 the jump to a short piece of new code that just loads the 32bit absolute
2881 address and jumps there.
2882 On x86_64, PC-relative jumps and PC-relative accesses to the GOT are limited
2883 to 32 bits (+-2GB).
2884
2885 This function just allocates space for one SymbolExtra for every
2886 undefined symbol in the object file. The code for the jump islands is
2887 filled in by makeSymbolExtra below.
2888 */
2889
2890 static int ocAllocateSymbolExtras( ObjectCode* oc, int count, int first )
2891 {
2892 #ifdef USE_MMAP
2893 int pagesize, n, m;
2894 #endif
2895 int aligned;
2896 #ifndef USE_MMAP
2897 int misalignment = 0;
2898 #ifdef darwin_HOST_OS
2899 misalignment = oc->misalignment;
2900 #endif
2901 #endif
2902
2903 if( count > 0 )
2904 {
2905 // round up to the nearest 4
2906 aligned = (oc->fileSize + 3) & ~3;
2907
2908 #ifdef USE_MMAP
2909 pagesize = getpagesize();
2910 n = ROUND_UP( oc->fileSize, pagesize );
2911 m = ROUND_UP( aligned + sizeof (SymbolExtra) * count, pagesize );
2912
2913 /* we try to use spare space at the end of the last page of the
2914 * image for the jump islands, but if there isn't enough space
2915 * then we have to map some (anonymously, remembering MAP_32BIT).
2916 */
2917 if( m > n ) // we need to allocate more pages
2918 {
2919 if (USE_CONTIGUOUS_MMAP)
2920 {
2921 /* Keep image and symbol_extras contiguous */
2922 void *new = mmapForLinker(n + (sizeof(SymbolExtra) * count),
2923 MAP_ANONYMOUS, -1);
2924 if (new)
2925 {
2926 memcpy(new, oc->image, oc->fileSize);
2927 munmap(oc->image, n);
2928 oc->image = new;
2929 oc->symbol_extras = (SymbolExtra *) (oc->image + n);
2930 }
2931 else
2932 oc->symbol_extras = NULL;
2933 }
2934 else
2935 {
2936 oc->symbol_extras = mmapForLinker(sizeof(SymbolExtra) * count,
2937 MAP_ANONYMOUS, -1);
2938 }
2939 }
2940 else
2941 {
2942 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
2943 }
2944 #else
2945 oc->image -= misalignment;
2946 oc->image = stgReallocBytes( oc->image,
2947 misalignment +
2948 aligned + sizeof (SymbolExtra) * count,
2949 "ocAllocateSymbolExtras" );
2950 oc->image += misalignment;
2951
2952 oc->symbol_extras = (SymbolExtra *) (oc->image + aligned);
2953 #endif /* USE_MMAP */
2954
2955 memset( oc->symbol_extras, 0, sizeof (SymbolExtra) * count );
2956 }
2957 else
2958 oc->symbol_extras = NULL;
2959
2960 oc->first_symbol_extra = first;
2961 oc->n_symbol_extras = count;
2962
2963 return 1;
2964 }
2965
2966 #endif
2967 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH) || defined(arm_HOST_ARCH)
2968
2969 #if defined(arm_HOST_ARCH)
2970
2971 static void
2972 ocFlushInstructionCache( ObjectCode *oc )
2973 {
2974 // Object code
2975 __clear_cache(oc->image, oc->image + oc->fileSize);
2976 // Jump islands
2977 __clear_cache(oc->symbol_extras, &oc->symbol_extras[oc->n_symbol_extras]);
2978 }
2979
2980 #endif
2981
2982 #if defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
2983 #if !defined(x86_64_HOST_ARCH) || !defined(mingw32_HOST_OS)
2984
2985 static SymbolExtra* makeSymbolExtra( ObjectCode* oc,
2986 unsigned long symbolNumber,
2987 unsigned long target )
2988 {
2989 SymbolExtra *extra;
2990
2991 ASSERT( symbolNumber >= oc->first_symbol_extra
2992 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
2993
2994 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
2995
2996 #ifdef powerpc_HOST_ARCH
2997 // lis r12, hi16(target)
2998 extra->jumpIsland.lis_r12 = 0x3d80;
2999 extra->jumpIsland.hi_addr = target >> 16;
3000
3001 // ori r12, r12, lo16(target)
3002 extra->jumpIsland.ori_r12_r12 = 0x618c;
3003 extra->jumpIsland.lo_addr = target & 0xffff;
3004
3005 // mtctr r12
3006 extra->jumpIsland.mtctr_r12 = 0x7d8903a6;
3007
3008 // bctr
3009 extra->jumpIsland.bctr = 0x4e800420;
3010 #endif
3011 #ifdef x86_64_HOST_ARCH
3012 // jmp *-14(%rip)
3013 static uint8_t jmp[] = { 0xFF, 0x25, 0xF2, 0xFF, 0xFF, 0xFF };
3014 extra->addr = target;
3015 memcpy(extra->jumpIsland, jmp, 6);
3016 #endif
3017
3018 return extra;
3019 }
3020
3021 #endif
3022 #endif // defined(powerpc_HOST_ARCH) || defined(x86_64_HOST_ARCH)
3023
3024 #ifdef arm_HOST_ARCH
3025 static SymbolExtra* makeArmSymbolExtra( ObjectCode* oc,
3026 unsigned long symbolNumber,
3027 unsigned long target,
3028 int fromThumb,
3029 int toThumb )
3030 {
3031 SymbolExtra *extra;
3032
3033 ASSERT( symbolNumber >= oc->first_symbol_extra
3034 && symbolNumber - oc->first_symbol_extra < oc->n_symbol_extras);
3035
3036 extra = &oc->symbol_extras[symbolNumber - oc->first_symbol_extra];
3037
3038 // Make sure instruction mode bit is set properly
3039 if (toThumb)
3040 target |= 1;
3041 else
3042 target &= ~1;
3043
3044 if (!fromThumb) {
3045 // In ARM encoding:
3046 // movw r12, #0
3047 // movt r12, #0
3048 // bx r12
3049 uint32_t code[] = { 0xe300c000, 0xe340c000, 0xe12fff1c };
3050
3051 // Patch lower half-word into movw
3052 code[0] |= ((target>>12) & 0xf) << 16;
3053 code[0] |= target & 0xfff;
3054 // Patch upper half-word into movt
3055 target >>= 16;
3056 code[1] |= ((target>>12) & 0xf) << 16;
3057 code[1] |= target & 0xfff;
3058
3059 memcpy(extra->jumpIsland, code, 12);
3060
3061 } else {
3062 // In Thumb encoding:
3063 // movw r12, #0
3064 // movt r12, #0
3065 // bx r12
3066 uint16_t code[] = { 0xf240, 0x0c00,
3067 0xf2c0, 0x0c00,
3068 0x4760 };
3069
3070 // Patch lower half-word into movw
3071 code[0] |= (target>>12) & 0xf;
3072 code[0] |= ((target>>11) & 0x1) << 10;
3073 code[1] |= ((target>>8) & 0x7) << 12;
3074 code[1] |= target & 0xff;
3075 // Patch upper half-word into movt
3076 target >>= 16;
3077 code[2] |= (target>>12) & 0xf;
3078 code[2] |= ((target>>11) & 0x1) << 10;
3079 code[3] |= ((target>>8) & 0x7) << 12;
3080 code[3] |= target & 0xff;
3081
3082 memcpy(extra->jumpIsland, code, 10);
3083 }
3084
3085 return extra;
3086 }
3087 #endif // arm_HOST_ARCH
3088
3089 /* --------------------------------------------------------------------------
3090 * PowerPC specifics (instruction cache flushing)
3091 * ------------------------------------------------------------------------*/
3092
3093 #ifdef powerpc_HOST_ARCH
3094 /*
3095 ocFlushInstructionCache
3096
3097 Flush the data & instruction caches.
3098 Because the PPC has split data/instruction caches, we have to
3099 do that whenever we modify code at runtime.
3100 */
3101
3102 static void
3103 ocFlushInstructionCacheFrom(void* begin, size_t length)
3104 {
3105 size_t n = (length + 3) / 4;
3106 unsigned long* p = begin;
3107
3108 while (n--)
3109 {
3110 __asm__ volatile ( "dcbf 0,%0\n\t"
3111 "sync\n\t"
3112 "icbi 0,%0"
3113 :
3114 : "r" (p)
3115 );
3116 p++;
3117 }
3118 __asm__ volatile ( "sync\n\t"
3119 "isync"
3120 );
3121 }
3122
3123 static void
3124 ocFlushInstructionCache( ObjectCode *oc )
3125 {
3126 /* The main object code */
3127 ocFlushInstructionCacheFrom(oc->image
3128 #ifdef darwin_HOST_OS
3129 + oc->misalignment
3130 #endif
3131 , oc->fileSize);
3132
3133 /* Jump Islands */
3134 ocFlushInstructionCacheFrom(oc->symbol_extras, sizeof(SymbolExtra) * oc->n_symbol_extras);
3135 }
3136 #endif /* powerpc_HOST_ARCH */
3137
3138
3139 /* --------------------------------------------------------------------------
3140 * PEi386 specifics (Win32 targets)
3141 * ------------------------------------------------------------------------*/
3142
3143 /* The information for this linker comes from
3144 Microsoft Portable Executable
3145 and Common Object File Format Specification
3146 revision 5.1 January 1998
3147 which SimonM says comes from the MS Developer Network CDs.
3148
3149 It can be found there (on older CDs), but can also be found
3150 online at:
3151
3152 http://www.microsoft.com/hwdev/hardware/PECOFF.asp
3153
3154 (this is Rev 6.0 from February 1999).
3155
3156 Things move, so if that fails, try searching for it via
3157
3158 http://www.google.com/search?q=PE+COFF+specification
3159
3160 The ultimate reference for the PE format is the Winnt.h
3161 header file that comes with the Platform SDKs; as always,
3162 implementations will drift wrt their documentation.
3163
3164 A good background article on the PE format is Matt Pietrek's
3165 March 1994 article in Microsoft System Journal (MSJ)
3166 (Vol.9, No. 3): "Peering Inside the PE: A Tour of the
3167 Win32 Portable Executable File Format." The info in there
3168 has recently been updated in a two part article in
3169 MSDN magazine, issues Feb and March 2002,
3170 "Inside Windows: An In-Depth Look into the Win32 Portable
3171 Executable File Format"
3172
3173 John Levine's book "Linkers and Loaders" contains useful
3174 info on PE too.
3175 */
3176
3177
3178 #if defined(OBJFORMAT_PEi386)
3179
3180
3181
3182 typedef unsigned char UChar;
3183 typedef unsigned short UInt16;
3184 typedef unsigned int UInt32;
3185 typedef int Int32;
3186 typedef unsigned long long int UInt64;
3187
3188
3189 typedef
3190 struct {
3191 UInt16 Machine;
3192 UInt16 NumberOfSections;
3193 UInt32 TimeDateStamp;
3194 UInt32 PointerToSymbolTable;
3195 UInt32 NumberOfSymbols;
3196 UInt16 SizeOfOptionalHeader;
3197 UInt16 Characteristics;
3198 }
3199 COFF_header;
3200
3201 #define sizeof_COFF_header 20
3202
3203
3204 typedef
3205 struct {
3206 UChar Name[8];
3207 UInt32 VirtualSize;
3208 UInt32 VirtualAddress;
3209 UInt32 SizeOfRawData;
3210 UInt32 PointerToRawData;
3211 UInt32 PointerToRelocations;
3212 UInt32 PointerToLinenumbers;
3213 UInt16 NumberOfRelocations;
3214 UInt16 NumberOfLineNumbers;
3215 UInt32 Characteristics;
3216 }
3217 COFF_section;
3218
3219 #define sizeof_COFF_section 40
3220
3221
3222 typedef
3223 struct {
3224 UChar Name[8];
3225 UInt32 Value;
3226 UInt16 SectionNumber;
3227 UInt16 Type;
3228 UChar StorageClass;
3229 UChar NumberOfAuxSymbols;
3230 }
3231 COFF_symbol;
3232
3233 #define sizeof_COFF_symbol 18
3234
3235
3236 typedef
3237 struct {
3238 UInt32 VirtualAddress;
3239 UInt32 SymbolTableIndex;
3240 UInt16 Type;
3241 }
3242 COFF_reloc;
3243
3244 #define sizeof_COFF_reloc 10
3245
3246
3247 /* From PE spec doc, section 3.3.2 */
3248 /* Note use of MYIMAGE_* since IMAGE_* are already defined in
3249 windows.h -- for the same purpose, but I want to know what I'm
3250 getting, here. */
3251 #define MYIMAGE_FILE_RELOCS_STRIPPED 0x0001
3252 #define MYIMAGE_FILE_EXECUTABLE_IMAGE 0x0002
3253 #define MYIMAGE_FILE_DLL 0x2000
3254 #define MYIMAGE_FILE_SYSTEM 0x1000
3255 #define MYIMAGE_FILE_BYTES_REVERSED_HI 0x8000
3256 #define MYIMAGE_FILE_BYTES_REVERSED_LO 0x0080
3257 #define MYIMAGE_FILE_32BIT_MACHINE 0x0100
3258
3259 /* From PE spec doc, section 5.4.2 and 5.4.4 */
3260 #define MYIMAGE_SYM_CLASS_EXTERNAL 2
3261 #define MYIMAGE_SYM_CLASS_STATIC 3
3262 #define MYIMAGE_SYM_UNDEFINED 0
3263
3264 /* From PE spec doc, section 4.1 */
3265 #define MYIMAGE_SCN_CNT_CODE 0x00000020
3266 #define MYIMAGE_SCN_CNT_INITIALIZED_DATA 0x00000040
3267 #define MYIMAGE_SCN_LNK_NRELOC_OVFL 0x01000000
3268
3269 /* From PE spec doc, section 5.2.1 */
3270 #define MYIMAGE_REL_I386_DIR32 0x0006
3271 #define MYIMAGE_REL_I386_REL32 0x0014
3272
3273
3274 /* We use myindex to calculate array addresses, rather than
3275 simply doing the normal subscript thing. That's because
3276 some of the above structs have sizes which are not
3277 a whole number of words. GCC rounds their sizes up to a
3278 whole number of words, which means that the address calcs
3279 arising from using normal C indexing or pointer arithmetic
3280 are just plain wrong. Sigh.
3281 */
3282 static UChar *
3283 myindex ( int scale, void* base, int index )
3284 {
3285 return
3286 ((UChar*)base) + scale * index;
3287 }
3288
3289
3290 static void
3291 printName ( UChar* name, UChar* strtab )
3292 {
3293 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3294 UInt32 strtab_offset = * (UInt32*)(name+4);
3295 debugBelch("%s", strtab + strtab_offset );
3296 } else {
3297 int i;
3298 for (i = 0; i < 8; i++) {
3299 if (name[i] == 0) break;
3300 debugBelch("%c", name[i] );
3301 }
3302 }
3303 }
3304
3305
3306 static void
3307 copyName ( UChar* name, UChar* strtab, UChar* dst, int dstSize )
3308 {
3309 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3310 UInt32 strtab_offset = * (UInt32*)(name+4);
3311 strncpy ( (char*)dst, (char*)strtab+strtab_offset, dstSize );
3312 dst[dstSize-1] = 0;
3313 } else {
3314 int i = 0;
3315 while (1) {
3316 if (i >= 8) break;
3317 if (name[i] == 0) break;
3318 dst[i] = name[i];
3319 i++;
3320 }
3321 dst[i] = 0;
3322 }
3323 }
3324
3325
3326 static UChar *
3327 cstring_from_COFF_symbol_name ( UChar* name, UChar* strtab )
3328 {
3329 UChar* newstr;
3330 /* If the string is longer than 8 bytes, look in the
3331 string table for it -- this will be correctly zero terminated.
3332 */
3333 if (name[0]==0 && name[1]==0 && name[2]==0 && name[3]==0) {
3334 UInt32 strtab_offset = * (UInt32*)(name+4);
3335 return ((UChar*)strtab) + strtab_offset;
3336 }
3337 /* Otherwise, if shorter than 8 bytes, return the original,
3338 which by defn is correctly terminated.
3339 */
3340 if (name[7]==0) return name;
3341 /* The annoying case: 8 bytes. Copy into a temporary
3342 (XXX which is never freed ...)
3343 */
3344 newstr = stgMallocBytes(9, "cstring_from_COFF_symbol_name");
3345 ASSERT(newstr);
3346 strncpy((char*)newstr,(char*)name,8);
3347 newstr[8] = 0;
3348 return newstr;
3349 }
3350
3351 /* Getting the name of a section is mildly tricky, so we make a
3352 function for it. Sadly, in one case we have to copy the string
3353 (when it is exactly 8 bytes long there's no trailing '\0'), so for
3354 consistency we *always* copy the string; the caller must free it
3355 */
3356 static char *
3357 cstring_from_section_name (UChar* name, UChar* strtab)
3358 {
3359 char *newstr;
3360
3361 if (name[0]=='/') {
3362 int strtab_offset = strtol((char*)name+1,NULL,10);
3363 int len = strlen(((char*)strtab) + strtab_offset);
3364
3365 newstr = stgMallocBytes(len+1, "cstring_from_section_symbol_name");
3366 strcpy((char*)newstr, (char*)((UChar*)strtab) + strtab_offset);
3367 return newstr;
3368 }
3369 else
3370 {
3371 newstr = stgMallocBytes(9, "cstring_from_section_symbol_name");
3372 ASSERT(newstr);
3373 strncpy((char*)newstr,(char*)name,8);
3374 newstr[8] = 0;
3375 return newstr;
3376 }
3377 }
3378
3379 /* Just compares the short names (first 8 chars) */
3380 static COFF_section *
3381 findPEi386SectionCalled ( ObjectCode* oc, UChar* name )
3382 {
3383 int i;
3384 COFF_header* hdr
3385 = (COFF_header*)(oc->image);
3386 COFF_section* sectab
3387 = (COFF_section*) (
3388 ((UChar*)(oc->image))
3389 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3390 );
3391 for (i = 0; i < hdr->NumberOfSections; i++) {
3392 UChar* n1;
3393 UChar* n2;
3394 COFF_section* section_i
3395 = (COFF_section*)
3396 myindex ( sizeof_COFF_section, sectab, i );
3397 n1 = (UChar*) &(section_i->Name);
3398 n2 = name;
3399 if (n1[0]==n2[0] && n1[1]==n2[1] && n1[2]==n2[2] &&
3400 n1[3]==n2[3] && n1[4]==n2[4] && n1[5]==n2[5] &&
3401 n1[6]==n2[6] && n1[7]==n2[7])
3402 return section_i;
3403 }
3404
3405 return NULL;
3406 }
3407
3408 static void
3409 zapTrailingAtSign ( UChar* sym )
3410 {
3411 # define my_isdigit(c) ((c) >= '0' && (c) <= '9')
3412 int i, j;
3413 if (sym[0] == 0) return;
3414 i = 0;
3415 while (sym[i] != 0) i++;
3416 i--;
3417 j = i;
3418 while (j > 0 && my_isdigit(sym[j])) j--;
3419 if (j > 0 && sym[j] == '@' && j != i) sym[j] = 0;
3420 # undef my_isdigit
3421 }
3422
3423 static void *
3424 lookupSymbolInDLLs ( UChar *lbl )
3425 {
3426 OpenedDLL* o_dll;
3427 void *sym;
3428
3429 for (o_dll = opened_dlls; o_dll != NULL; o_dll = o_dll->next) {
3430 /* debugBelch("look in %s for %s\n", o_dll->name, lbl); */
3431
3432 if (lbl[0] == '_') {
3433 /* HACK: if the name has an initial underscore, try stripping
3434 it off & look that up first. I've yet to verify whether there's
3435 a Rule that governs whether an initial '_' *should always* be
3436 stripped off when mapping from import lib name to the DLL name.
3437 */
3438 sym = GetProcAddress(o_dll->instance, (char*)(lbl+1));
3439 if (sym != NULL) {
3440 /*debugBelch("found %s in %s\n", lbl+1,o_dll->name);*/
3441 return sym;
3442 }
3443 }
3444 sym = GetProcAddress(o_dll->instance, (char*)lbl);
3445 if (sym != NULL) {
3446 /*debugBelch("found %s in %s\n", lbl,o_dll->name);*/
3447 return sym;
3448 }
3449 }
3450 return NULL;
3451 }
3452
3453
3454 static int
3455 ocVerifyImage_PEi386 ( ObjectCode* oc )
3456 {
3457 int i;
3458 UInt32 j, noRelocs;
3459 COFF_header* hdr;
3460 COFF_section* sectab;
3461 COFF_symbol* symtab;
3462 UChar* strtab;
3463 /* debugBelch("\nLOADING %s\n", oc->fileName); */
3464 hdr = (COFF_header*)(oc->image);
3465 sectab = (COFF_section*) (
3466 ((UChar*)(oc->image))
3467 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3468 );
3469 symtab = (COFF_symbol*) (
3470 ((UChar*)(oc->image))
3471 + hdr->PointerToSymbolTable
3472 );
3473 strtab = ((UChar*)symtab)
3474 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
3475
3476 #if defined(i386_HOST_ARCH)
3477 if (hdr->Machine != 0x14c) {
3478 errorBelch("%" PATH_FMT ": Not x86 PEi386", oc->fileName);
3479 return 0;
3480 }
3481 #elif defined(x86_64_HOST_ARCH)
3482 if (hdr->Machine != 0x8664) {
3483 errorBelch("%" PATH_FMT ": Not x86_64 PEi386", oc->fileName);
3484 return 0;
3485 }
3486 #else
3487 errorBelch("PEi386 not supported on this arch");
3488 #endif
3489
3490 if (hdr->SizeOfOptionalHeader != 0) {
3491 errorBelch("%" PATH_FMT ": PEi386 with nonempty optional header", oc->fileName);
3492 return 0;
3493 }
3494 if ( /* (hdr->Characteristics & MYIMAGE_FILE_RELOCS_STRIPPED) || */
3495 (hdr->Characteristics & MYIMAGE_FILE_EXECUTABLE_IMAGE) ||
3496 (hdr->Characteristics & MYIMAGE_FILE_DLL) ||
3497 (hdr->Characteristics & MYIMAGE_FILE_SYSTEM) ) {
3498 errorBelch("%" PATH_FMT ": Not a PEi386 object file", oc->fileName);
3499 return 0;
3500 }
3501 if ( (hdr->Characteristics & MYIMAGE_FILE_BYTES_REVERSED_HI)
3502 /* || !(hdr->Characteristics & MYIMAGE_FILE_32BIT_MACHINE) */ ) {
3503 errorBelch("%" PATH_FMT ": Invalid PEi386 word size or endiannness: %d",
3504 oc->fileName,
3505 (int)(hdr->Characteristics));
3506 return 0;
3507 }
3508 /* If the string table size is way crazy, this might indicate that
3509 there are more than 64k relocations, despite claims to the
3510 contrary. Hence this test. */
3511 /* debugBelch("strtab size %d\n", * (UInt32*)strtab); */
3512 #if 0
3513 if ( (*(UInt32*)strtab) > 600000 ) {
3514 /* Note that 600k has no special significance other than being
3515 big enough to handle the almost-2MB-sized lumps that
3516 constitute HSwin32*.o. */
3517 debugBelch("PEi386 object has suspiciously large string table; > 64k relocs?");
3518 return 0;
3519 }
3520 #endif
3521
3522 /* No further verification after this point; only debug printing. */
3523 i = 0;
3524 IF_DEBUG(linker, i=1);
3525 if (i == 0) return 1;
3526
3527 debugBelch( "sectab offset = %" FMT_Int "\n", ((UChar*)sectab) - ((UChar*)hdr) );
3528 debugBelch( "symtab offset = %" FMT_Int "\n", ((UChar*)symtab) - ((UChar*)hdr) );
3529 debugBelch( "strtab offset = %" FMT_Int "\n", ((UChar*)strtab) - ((UChar*)hdr) );
3530
3531 debugBelch("\n" );
3532 debugBelch( "Machine: 0x%x\n", (UInt32)(hdr->Machine) );
3533 debugBelch( "# sections: %d\n", (UInt32)(hdr->NumberOfSections) );
3534 debugBelch( "time/date: 0x%x\n", (UInt32)(hdr->TimeDateStamp) );
3535 debugBelch( "symtab offset: %d\n", (UInt32)(hdr->PointerToSymbolTable) );
3536 debugBelch( "# symbols: %d\n", (UInt32)(hdr->NumberOfSymbols) );
3537 debugBelch( "sz of opt hdr: %d\n", (UInt32)(hdr->SizeOfOptionalHeader) );
3538 debugBelch( "characteristics: 0x%x\n", (UInt32)(hdr->Characteristics) );
3539
3540 /* Print the section table. */
3541 debugBelch("\n" );
3542 for (i = 0; i < hdr->NumberOfSections; i++) {
3543 COFF_reloc* reltab;
3544 COFF_section* sectab_i
3545 = (COFF_section*)
3546 myindex ( sizeof_COFF_section, sectab, i );
3547 debugBelch(
3548 "\n"
3549 "section %d\n"
3550 " name `",
3551 i
3552 );
3553 printName ( sectab_i->Name, strtab );
3554 debugBelch(
3555 "'\n"
3556 " vsize %d\n"
3557 " vaddr %d\n"
3558 " data sz %d\n"
3559 " data off %d\n"
3560 " num rel %d\n"
3561 " off rel %d\n"
3562 " ptr raw 0x%x\n",
3563 sectab_i->VirtualSize,
3564 sectab_i->VirtualAddress,
3565 sectab_i->SizeOfRawData,
3566 sectab_i->PointerToRawData,
3567 sectab_i->NumberOfRelocations,
3568 sectab_i->PointerToRelocations,
3569 sectab_i->PointerToRawData
3570 );
3571 reltab = (COFF_reloc*) (
3572 ((UChar*)(oc->image)) + sectab_i->PointerToRelocations
3573 );
3574
3575 if ( sectab_i->Characteristics & MYIMAGE_SCN_LNK_NRELOC_OVFL ) {
3576 /* If the relocation field (a short) has overflowed, the
3577 * real count can be found in the first reloc entry.
3578 *
3579 * See Section 4.1 (last para) of the PE spec (rev6.0).
3580 */
3581 COFF_reloc* rel = (COFF_reloc*)
3582 myindex ( sizeof_COFF_reloc, reltab, 0 );
3583 noRelocs = rel->VirtualAddress;
3584 j = 1;
3585 } else {
3586 noRelocs = sectab_i->NumberOfRelocations;
3587 j = 0;
3588 }
3589
3590 for (; j < noRelocs; j++) {
3591 COFF_symbol* sym;
3592 COFF_reloc* rel = (COFF_reloc*)
3593 myindex ( sizeof_COFF_reloc, reltab, j );
3594 debugBelch(
3595 " type 0x%-4x vaddr 0x%-8x name `",
3596 (UInt32)rel->Type,
3597 rel->VirtualAddress );
3598 sym = (COFF_symbol*)
3599 myindex ( sizeof_COFF_symbol, symtab, rel->SymbolTableIndex );
3600 /* Hmm..mysterious looking offset - what's it for? SOF */
3601 printName ( sym->Name, strtab -10 );
3602 debugBelch("'\n" );
3603 }
3604
3605 debugBelch("\n" );
3606 }
3607 debugBelch("\n" );
3608 debugBelch("string table has size 0x%x\n", * (UInt32*)strtab );
3609 debugBelch("---START of string table---\n");
3610 for (i = 4; i < *(Int32*)strtab; i++) {
3611 if (strtab[i] == 0)
3612 debugBelch("\n"); else
3613 debugBelch("%c", strtab[i] );
3614 }
3615 debugBelch("--- END of string table---\n");
3616
3617 debugBelch("\n" );
3618 i = 0;
3619 while (1) {
3620 COFF_symbol* symtab_i;
3621 if (i >= (Int32)(hdr->NumberOfSymbols)) break;
3622 symtab_i = (COFF_symbol*)
3623 myindex ( sizeof_COFF_symbol, symtab, i );
3624 debugBelch(
3625 "symbol %d\n"
3626 " name `",
3627 i
3628 );
3629 printName ( symtab_i->Name, strtab );
3630 debugBelch(
3631 "'\n"
3632 " value 0x%x\n"
3633 " 1+sec# %d\n"
3634 " type 0x%x\n"
3635 " sclass 0x%x\n"
3636 " nAux %d\n",
3637 symtab_i->Value,
3638 (Int32)(symtab_i->SectionNumber),
3639 (UInt32)symtab_i->Type,
3640 (UInt32)symtab_i->StorageClass,
3641 (UInt32)symtab_i->NumberOfAuxSymbols
3642 );
3643 i += symtab_i->NumberOfAuxSymbols;
3644 i++;
3645 }
3646
3647 debugBelch("\n" );
3648 return 1;
3649 }
3650
3651
3652 static int
3653 ocGetNames_PEi386 ( ObjectCode* oc )
3654 {
3655 COFF_header* hdr;
3656 COFF_section* sectab;
3657 COFF_symbol* symtab;
3658 UChar* strtab;
3659
3660 UChar* sname;
3661 void* addr;
3662 int i;
3663
3664 hdr = (COFF_header*)(oc->image);
3665 sectab = (COFF_section*) (
3666 ((UChar*)(oc->image))
3667 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3668 );
3669 symtab = (COFF_symbol*) (
3670 ((UChar*)(oc->image))
3671 + hdr->PointerToSymbolTable
3672 );
3673 strtab = ((UChar*)(oc->image))
3674 + hdr->PointerToSymbolTable
3675 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
3676
3677 /* Allocate space for any (local, anonymous) .bss sections. */
3678
3679 for (i = 0; i < hdr->NumberOfSections; i++) {
3680 UInt32 bss_sz;
3681 UChar* zspace;
3682 COFF_section* sectab_i
3683 = (COFF_section*)
3684 myindex ( sizeof_COFF_section, sectab, i );
3685
3686 char *secname = cstring_from_section_name(sectab_i->Name, strtab);
3687
3688 if (0 != strcmp(secname, ".bss")) {
3689 stgFree(secname);
3690 continue;
3691 }
3692
3693 stgFree(secname);
3694
3695 /* sof 10/05: the PE spec text isn't too clear regarding what
3696 * the SizeOfRawData field is supposed to hold for object
3697 * file sections containing just uninitialized data -- for executables,
3698 * it is supposed to be zero; unclear what it's supposed to be
3699 * for object files. However, VirtualSize is guaranteed to be
3700 * zero for object files, which definitely suggests that SizeOfRawData
3701 * will be non-zero (where else would the size of this .bss section be
3702 * stored?) Looking at the COFF_section info for incoming object files,
3703 * this certainly appears to be the case.
3704 *
3705 * => I suspect we've been incorrectly handling .bss sections in (relocatable)
3706 * object files up until now. This turned out to bite us with ghc-6.4.1's use
3707 * of gcc-3.4.x, which has started to emit initially-zeroed-out local 'static'
3708 * variable decls into to the .bss section. (The specific function in Q which
3709 * triggered this is libraries/base/cbits/dirUtils.c:__hscore_getFolderPath())
3710 */
3711 if (sectab_i->VirtualSize == 0 && sectab_i->SizeOfRawData == 0) continue;
3712 /* This is a non-empty .bss section. Allocate zeroed space for
3713 it, and set its PointerToRawData field such that oc->image +
3714 PointerToRawData == addr_of_zeroed_space. */
3715 bss_sz = sectab_i->VirtualSize;
3716 if ( bss_sz < sectab_i->SizeOfRawData) { bss_sz = sectab_i->SizeOfRawData; }
3717 zspace = stgCallocBytes(1, bss_sz, "ocGetNames_PEi386(anonymous bss)");
3718 sectab_i->PointerToRawData = ((UChar*)zspace) - ((UChar*)(oc->image));
3719 addProddableBlock(oc, zspace, bss_sz);
3720 /* debugBelch("BSS anon section at 0x%x\n", zspace); */
3721 }
3722
3723 /* Copy section information into the ObjectCode. */
3724
3725 for (i = 0; i < hdr->NumberOfSections; i++) {
3726 UChar* start;
3727 UChar* end;
3728 UInt32 sz;
3729
3730 SectionKind kind
3731 = SECTIONKIND_OTHER;
3732 COFF_section* sectab_i
3733 = (COFF_section*)
3734 myindex ( sizeof_COFF_section, sectab, i );
3735
3736 char *secname = cstring_from_section_name(sectab_i->Name, strtab);
3737
3738 IF_DEBUG(linker, debugBelch("section name = %s\n", secname ));
3739
3740 # if 0
3741 /* I'm sure this is the Right Way to do it. However, the
3742 alternative of testing the sectab_i->Name field seems to
3743 work ok with Cygwin.
3744 */
3745 if (sectab_i->Characteristics & MYIMAGE_SCN_CNT_CODE ||
3746 sectab_i->Characteristics & MYIMAGE_SCN_CNT_INITIALIZED_DATA)
3747 kind = SECTIONKIND_CODE_OR_RODATA;
3748 # endif
3749
3750 if (0==strcmp(".text",(char*)secname) ||
3751 0==strcmp(".text.startup",(char*)secname) ||
3752 0==strcmp(".rdata",(char*)secname)||
3753 0==strcmp(".rodata",(char*)secname))
3754 kind = SECTIONKIND_CODE_OR_RODATA;
3755 if (0==strcmp(".data",(char*)secname) ||
3756 0==strcmp(".bss",(char*)secname))
3757 kind = SECTIONKIND_RWDATA;
3758
3759 ASSERT(sectab_i->SizeOfRawData == 0 || sectab_i->VirtualSize == 0);
3760 sz = sectab_i->SizeOfRawData;
3761 if (sz < sectab_i->VirtualSize) sz = sectab_i->VirtualSize;
3762
3763 start = ((UChar*)(oc->image)) + sectab_i->PointerToRawData;
3764 end = start + sz - 1;
3765
3766 if (kind == SECTIONKIND_OTHER
3767 /* Ignore sections called which contain stabs debugging
3768 information. */
3769 && 0 != strcmp(".stab", (char*)secname)
3770 && 0 != strcmp(".stabstr", (char*)secname)
3771 /* Ignore sections called which contain exception information. */
3772 && 0 != strcmp(".pdata", (char*)secname)
3773 && 0 != strcmp(".xdata", (char*)secname)
3774 /* ignore constructor section for now */
3775 && 0 != strcmp(".ctors", (char*)secname)
3776 /* ignore section generated from .ident */
3777 && 0!= strncmp(".debug", (char*)secname, 6)
3778 /* ignore unknown section that appeared in gcc 3.4.5(?) */
3779 && 0!= strcmp(".reloc", (char*)secname)
3780 && 0 != strcmp(".rdata$zzz", (char*)secname)
3781 ) {
3782 errorBelch("Unknown PEi386 section name `%s' (while processing: %" PATH_FMT")", secname, oc->fileName);
3783 stgFree(secname);
3784 return 0;
3785 }
3786
3787 if (kind != SECTIONKIND_OTHER && end >= start) {
3788 if ((((size_t)(start)) % sizeof(void *)) != 0) {
3789 barf("Misaligned section: %p", start);
3790 }
3791
3792 addSection(oc, kind, start, end);
3793 addProddableBlock(oc, start, end - start + 1);
3794 }
3795
3796 stgFree(secname);
3797 }
3798
3799 /* Copy exported symbols into the ObjectCode. */
3800
3801 oc->n_symbols = hdr->NumberOfSymbols;
3802 oc->symbols = stgMallocBytes(oc->n_symbols * sizeof(char*),
3803 "ocGetNames_PEi386(oc->symbols)");
3804 /* Call me paranoid; I don't care. */
3805 for (i = 0; i < oc->n_symbols; i++)
3806 oc->symbols[i] = NULL;
3807
3808 i = 0;
3809 while (1) {
3810 COFF_symbol* symtab_i;
3811 if (i >= (Int32)(hdr->NumberOfSymbols)) break;
3812 symtab_i = (COFF_symbol*)
3813 myindex ( sizeof_COFF_symbol, symtab, i );
3814
3815 addr = NULL;
3816
3817 if (symtab_i->StorageClass == MYIMAGE_SYM_CLASS_EXTERNAL
3818 && symtab_i->SectionNumber != MYIMAGE_SYM_UNDEFINED) {
3819 /* This symbol is global and defined, viz, exported */
3820 /* for MYIMAGE_SYMCLASS_EXTERNAL
3821 && !MYIMAGE_SYM_UNDEFINED,
3822 the address of the symbol is:
3823 address of relevant section + offset in section
3824 */
3825 COFF_section* sectabent
3826 = (COFF_section*) myindex ( sizeof_COFF_section,
3827 sectab,
3828 symtab_i->SectionNumber-1 );
3829 addr = ((UChar*)(oc->image))
3830 + (sectabent->PointerToRawData
3831 + symtab_i->Value);
3832 }
3833 else
3834 if (symtab_i->SectionNumber == MYIMAGE_SYM_UNDEFINED
3835 && symtab_i->Value > 0) {
3836 /* This symbol isn't in any section at all, ie, global bss.
3837 Allocate zeroed space for it. */
3838 addr = stgCallocBytes(1, symtab_i->Value,
3839 "ocGetNames_PEi386(non-anonymous bss)");
3840 addSection(oc, SECTIONKIND_RWDATA, addr,
3841 ((UChar*)addr) + symtab_i->Value - 1);
3842 addProddableBlock(oc, addr, symtab_i->Value);
3843 /* debugBelch("BSS section at 0x%x\n", addr); */
3844 }
3845
3846 if (addr != NULL ) {
3847 sname = cstring_from_COFF_symbol_name ( symtab_i->Name, strtab );
3848 /* debugBelch("addSymbol %p `%s \n", addr,sname); */
3849 IF_DEBUG(linker, debugBelch("addSymbol %p `%s'\n", addr,sname);)
3850 ASSERT(i >= 0 && i < oc->n_symbols);
3851 /* cstring_from_COFF_symbol_name always succeeds. */
3852 oc->symbols[i] = (char*)sname;
3853 ghciInsertStrHashTable(oc->fileName, symhash, (char*)sname, addr);
3854 } else {
3855 # if 0
3856 debugBelch(
3857 "IGNORING symbol %d\n"
3858 " name `",
3859 i
3860 );
3861 printName ( symtab_i->Name, strtab );
3862 debugBelch(
3863 "'\n"
3864 " value 0x%x\n"
3865 " 1+sec# %d\n"
3866 " type 0x%x\n"
3867 " sclass 0x%x\n"
3868 " nAux %d\n",
3869 symtab_i->Value,
3870 (Int32)(symtab_i->SectionNumber),
3871 (UInt32)symtab_i->Type,
3872 (UInt32)symtab_i->StorageClass,
3873 (UInt32)symtab_i->NumberOfAuxSymbols
3874 );
3875 # endif
3876 }
3877
3878 i += symtab_i->NumberOfAuxSymbols;
3879 i++;
3880 }
3881
3882 return 1;
3883 }
3884
3885
3886 static int
3887 ocResolve_PEi386 ( ObjectCode* oc )
3888 {
3889 COFF_header* hdr;
3890 COFF_section* sectab;
3891 COFF_symbol* symtab;
3892 UChar* strtab;
3893
3894 UInt32 A;
3895 size_t S;
3896 void * pP;
3897
3898 int i;
3899 UInt32 j, noRelocs;
3900
3901 /* ToDo: should be variable-sized? But is at least safe in the
3902 sense of buffer-overrun-proof. */
3903 UChar symbol[1000];
3904 /* debugBelch("resolving for %s\n", oc->fileName); */
3905
3906 hdr = (COFF_header*)(oc->image);
3907 sectab = (COFF_section*) (
3908 ((UChar*)(oc->image))
3909 + sizeof_COFF_header + hdr->SizeOfOptionalHeader
3910 );
3911 symtab = (COFF_symbol*) (
3912 ((UChar*)(oc->image))
3913 + hdr->PointerToSymbolTable
3914 );
3915 strtab = ((UChar*)(oc->image))
3916 + hdr->PointerToSymbolTable
3917 + hdr->NumberOfSymbols * sizeof_COFF_symbol;
3918
3919 for (i = 0; i < hdr->NumberOfSections; i++) {
3920 COFF_section* sectab_i
3921 = (COFF_section*)
3922 myindex ( sizeof_COFF_section, sectab, i );
3923 COFF_reloc* reltab
3924 = (COFF_reloc*) (
3925 ((UChar*)(oc->image)) + sectab_i->PointerToRelocations
3926 );
3927
3928 char *secname = cstring_from_section_name(sectab_i->Name, strtab);
3929
3930 /* Ignore sections called which contain stabs debugging
3931 information. */
3932 if (0 == strcmp(".stab", (char*)secname)
3933 || 0 == strcmp(".stabstr", (char*)secname)
3934 || 0 == strcmp(".pdata", (char*)secname)
3935 || 0 == strcmp(".xdata", (char*)secname)
3936 || 0 == strcmp(".ctors", (char*)secname)
3937 || 0 == strncmp(".debug", (char*)secname, 6)
3938 || 0 == strcmp(".rdata$zzz", (char*)secname)) {
3939 stgFree(secname);
3940 continue;
3941 }
3942
3943 stgFree(secname);
3944
3945 if ( sectab_i->Characteristics & MYIMAGE_SCN_LNK_NRELOC_OVFL ) {
3946 /* If the relocation field (a short) has overflowed, the
3947 * real count can be found in the first reloc entry.
3948 *
3949 * See Section 4.1 (last para) of the PE spec (rev6.0).
3950 *
3951 * Nov2003 update: the GNU linker still doesn't correctly
3952 * handle the generation of relocatable object files with
3953 * overflown relocations. Hence the output to warn of potential
3954 * troubles.
3955 */
3956 COFF_reloc* rel = (COFF_reloc*)
3957 myindex ( sizeof_COFF_reloc, reltab, 0 );
3958 noRelocs = rel->VirtualAddress;
3959
3960 /* 10/05: we now assume (and check for) a GNU ld that is capable
3961 * of handling object files with (>2^16) of relocs.
3962 */
3963 #if 0
3964 debugBelch("WARNING: Overflown relocation field (# relocs found: %u)\n",
3965 noRelocs);
3966 #endif
3967 j = 1;
3968 } else {
3969 noRelocs = sectab_i->NumberOfRelocations;
3970 j = 0;
3971 }
3972
3973 for (; j < noRelocs; j++) {
3974 COFF_symbol* sym;
3975 COFF_reloc* reltab_j
3976 = (COFF_reloc*)
3977 myindex ( sizeof_COFF_reloc, reltab, j );
3978
3979 /* the location to patch */
3980 pP = (
3981 ((UChar*)(oc->image))
3982 + (sectab_i->PointerToRawData
3983 + reltab_j->VirtualAddress
3984 - sectab_i->VirtualAddress )
3985 );
3986 /* the existing contents of pP */
3987 A = *(UInt32*)pP;
3988 /* the symbol to connect to */
3989 sym = (COFF_symbol*)
3990 myindex ( sizeof_COFF_symbol,
3991 symtab, reltab_j->SymbolTableIndex );
3992 IF_DEBUG(linker,
3993 debugBelch(
3994 "reloc sec %2d num %3d: type 0x%-4x "
3995 "vaddr 0x%-8x name `",
3996 i, j,
3997 (UInt32)reltab_j->Type,
3998 reltab_j->VirtualAddress );
3999 printName ( sym->Name, strtab );
4000 debugBelch("'\n" ));
4001
4002 if (sym->StorageClass == MYIMAGE_SYM_CLASS_STATIC) {
4003 COFF_section* section_sym
4004 = findPEi386SectionCalled ( oc, sym->Name );
4005 if (!section_sym) {
4006 errorBelch("%" PATH_FMT ": can't find section `%s'", oc->fileName, sym->Name);
4007 return 0;
4008 }
4009 S = ((size_t)(oc->image))
4010 + ((size_t)(section_sym->PointerToRawData))
4011 + ((size_t)(sym->Value));
4012 } else {
4013 <